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Failed to build DateGrid with Swift 5.8 for macOS (SPM).

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Build Log

    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:20:9: error: 'Group' is only available in macOS 10.15 or newer
        Group {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:20:9: note: add 'if #available' version check
        Group {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:20:9: error: 'init(content:)' is only available in macOS 10.15 or newer
        Group {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:20:9: note: add 'if #available' version check
        Group {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:22:17: error: 'Text' is only available in macOS 10.15 or newer
                Text(date.day)
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:22:17: note: add 'if #available' version check
                Text(date.day)
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:23:22: error: 'padding' is only available in macOS 10.15 or newer
                    .padding(8)
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:23:22: note: add 'if #available' version check
                    .padding(8)
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:24:22: error: 'background(_:ignoresSafeAreaEdges:)' is only available in macOS 12.0 or newer
                    .background(Color.purple)
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:24:22: note: add 'if #available' version check
                    .background(Color.purple)
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:24:33: error: 'Color' is only available in macOS 10.15 or newer
                    .background(Color.purple)
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:24:33: note: add 'if #available' version check
                    .background(Color.purple)
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:24:39: error: 'purple' is only available in macOS 10.15 or newer
                    .background(Color.purple)
                                      ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:24:39: note: add 'if #available' version check
                    .background(Color.purple)
                                      ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:25:22: error: 'cornerRadius(_:antialiased:)' is only available in macOS 10.15 or newer
                    .cornerRadius(20)
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:25:22: note: add 'if #available' version check
                    .cornerRadius(20)
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:26:22: error: 'padding' is only available in macOS 10.15 or newer
                    .padding(.bottom, 10)
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:26:22: note: add 'if #available' version check
                    .padding(.bottom, 10)
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:22: error: 'transition' is only available in macOS 10.15 or newer
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:22: note: add 'if #available' version check
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:33: error: 'AnyTransition' is only available in macOS 10.15 or newer
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:33: note: add 'if #available' version check
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:47: error: 'scale' is only available in macOS 10.15 or newer
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:47: note: add 'if #available' version check
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:53: error: 'animation' is only available in macOS 10.15 or newer
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                                    ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:53: note: add 'if #available' version check
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                                    ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:63: error: 'Animation' is only available in macOS 10.15 or newer
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:63: note: add 'if #available' version check
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:73: error: 'spring(response:dampingFraction:blendDuration:)' is only available in macOS 10.15 or newer
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:73: note: add 'if #available' version check
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:82: error: 'delay' is only available in macOS 10.15 or newer
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                                                                 ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:82: note: add 'if #available' version check
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                                                                 ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:21:24: error: 'buildEither(first:)' is only available in macOS 10.15 or newer
            if isShown {
                       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:21:24: note: add 'if #available' version check
            if isShown {
                       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:30:17: error: 'Text' is only available in macOS 10.15 or newer
                Text("")
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:30:17: note: add 'if #available' version check
                Text("")
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:31:22: error: 'onAppear(perform:)' is only available in macOS 10.15 or newer
                    .onAppear(perform: {
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:31:22: note: add 'if #available' version check
                    .onAppear(perform: {
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:32:25: error: 'withAnimation' is only available in macOS 10.15 or newer
                        withAnimation {
                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:32:25: note: add 'if #available' version check
                        withAnimation {
                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:29:20: error: 'buildEither(second:)' is only available in macOS 10.15 or newer
            } else {
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:29:20: note: add 'if #available' version check
            } else {
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:20:15: warning: conformance of '_ConditionalContent<TrueContent, FalseContent>' to 'View' is only available in macOS 10.15 or newer
        Group {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:20:15: note: add 'if #available' version check
        Group {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:32: warning: conformance of 'Group<Content>' to 'View' is only available in macOS 10.15 or newer
    public var body: some View {
                               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:32: note: add 'if #available' version check
    public var body: some View {
                               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:44:14: error: 'background(_:ignoresSafeAreaEdges:)' is only available in macOS 12.0 or newer
            .background(Color.red)
             ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:44:14: note: add 'if #available' version check
            .background(Color.red)
             ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:42:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:41:8: note: add @available attribute to enclosing struct
struct DateCell1_Previews: PreviewProvider {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:44:25: error: 'Color' is only available in macOS 10.15 or newer
            .background(Color.red)
                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:44:25: note: add 'if #available' version check
            .background(Color.red)
                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:42:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:41:8: note: add @available attribute to enclosing struct
struct DateCell1_Previews: PreviewProvider {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:44:31: error: 'red' is only available in macOS 10.15 or newer
            .background(Color.red)
                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:44:31: note: add 'if #available' version check
            .background(Color.red)
                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:42:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:41:8: note: add @available attribute to enclosing struct
struct DateCell1_Previews: PreviewProvider {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:27: error: 'View' is only available in macOS 10.15 or newer
    public var body: some View {
                          ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:10:15: note: add @available attribute to enclosing struct
public struct NormalDayCell: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:26:31: error: 'View' is only available in macOS 10.15 or newer
    static var previews: some View {
                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:26:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:25:8: note: add @available attribute to enclosing struct
struct NormalDayCell_Previews: PreviewProvider {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:17:9: error: 'Text' is only available in macOS 10.15 or newer
        Text(date.day)
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:17:9: note: add 'if #available' version check
        Text(date.day)
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:10:15: note: add @available attribute to enclosing struct
public struct NormalDayCell: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:18:14: error: 'padding' is only available in macOS 10.15 or newer
            .padding(8)
             ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:10:15: note: add @available attribute to enclosing struct
public struct NormalDayCell: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:19:14: error: 'background(_:ignoresSafeAreaEdges:)' is only available in macOS 12.0 or newer
            .background(Color.blue)
             ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:10:15: note: add @available attribute to enclosing struct
public struct NormalDayCell: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:19:25: error: 'Color' is only available in macOS 10.15 or newer
            .background(Color.blue)
                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:10:15: note: add @available attribute to enclosing struct
public struct NormalDayCell: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:19:31: error: 'blue' is only available in macOS 10.15 or newer
            .background(Color.blue)
                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:10:15: note: add @available attribute to enclosing struct
public struct NormalDayCell: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:20:14: error: 'cornerRadius(_:antialiased:)' is only available in macOS 10.15 or newer
            .cornerRadius(8)
             ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:10:15: note: add @available attribute to enclosing struct
public struct NormalDayCell: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:21:14: error: 'padding' is only available in macOS 10.15 or newer
            .padding([.bottom], 10)
             ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:21:14: note: add 'if #available' version check
            .padding([.bottom], 10)
             ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:10:15: note: add @available attribute to enclosing struct
public struct NormalDayCell: View {
              ^
[10/11] Compiling DateGrid NormalDayCell.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:16:6: error: 'State' is only available in macOS 10.15 or newer
    @State private var isShown = false
     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:27: error: 'View' is only available in macOS 10.15 or newer
    public var body: some View {
                          ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:42:31: error: 'View' is only available in macOS 10.15 or newer
    static var previews: some View {
                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:42:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:41:8: note: add @available attribute to enclosing struct
struct DateCell1_Previews: PreviewProvider {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:20:9: warning: conformance of 'Group<Content>' to 'View' is only available in macOS 10.15 or newer
        Group {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:20:9: note: add 'if #available' version check
        Group {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:20:9: error: 'Group' is only available in macOS 10.15 or newer
        Group {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:20:9: note: add 'if #available' version check
        Group {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:20:9: error: 'init(content:)' is only available in macOS 10.15 or newer
        Group {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:20:9: note: add 'if #available' version check
        Group {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:22:17: error: 'Text' is only available in macOS 10.15 or newer
                Text(date.day)
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:22:17: note: add 'if #available' version check
                Text(date.day)
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:23:22: error: 'padding' is only available in macOS 10.15 or newer
                    .padding(8)
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:23:22: note: add 'if #available' version check
                    .padding(8)
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:24:22: error: 'background(_:ignoresSafeAreaEdges:)' is only available in macOS 12.0 or newer
                    .background(Color.purple)
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:24:22: note: add 'if #available' version check
                    .background(Color.purple)
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:24:33: error: 'Color' is only available in macOS 10.15 or newer
                    .background(Color.purple)
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:24:33: note: add 'if #available' version check
                    .background(Color.purple)
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:24:39: error: 'purple' is only available in macOS 10.15 or newer
                    .background(Color.purple)
                                      ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:24:39: note: add 'if #available' version check
                    .background(Color.purple)
                                      ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:25:22: error: 'cornerRadius(_:antialiased:)' is only available in macOS 10.15 or newer
                    .cornerRadius(20)
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:25:22: note: add 'if #available' version check
                    .cornerRadius(20)
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:26:22: error: 'padding' is only available in macOS 10.15 or newer
                    .padding(.bottom, 10)
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:26:22: note: add 'if #available' version check
                    .padding(.bottom, 10)
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:22: error: 'transition' is only available in macOS 10.15 or newer
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:22: note: add 'if #available' version check
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:33: error: 'AnyTransition' is only available in macOS 10.15 or newer
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:33: note: add 'if #available' version check
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:47: error: 'scale' is only available in macOS 10.15 or newer
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:47: note: add 'if #available' version check
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:53: error: 'animation' is only available in macOS 10.15 or newer
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                                    ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:53: note: add 'if #available' version check
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                                    ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:63: error: 'Animation' is only available in macOS 10.15 or newer
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:63: note: add 'if #available' version check
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:73: error: 'spring(response:dampingFraction:blendDuration:)' is only available in macOS 10.15 or newer
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:73: note: add 'if #available' version check
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:82: error: 'delay' is only available in macOS 10.15 or newer
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                                                                 ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:82: note: add 'if #available' version check
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                                                                 ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:21:24: error: 'buildEither(first:)' is only available in macOS 10.15 or newer
            if isShown {
                       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:21:24: note: add 'if #available' version check
            if isShown {
                       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:30:17: error: 'Text' is only available in macOS 10.15 or newer
                Text("")
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:30:17: note: add 'if #available' version check
                Text("")
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:31:22: error: 'onAppear(perform:)' is only available in macOS 10.15 or newer
                    .onAppear(perform: {
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:31:22: note: add 'if #available' version check
                    .onAppear(perform: {
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:32:25: error: 'withAnimation' is only available in macOS 10.15 or newer
                        withAnimation {
                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:32:25: note: add 'if #available' version check
                        withAnimation {
                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:29:20: error: 'buildEither(second:)' is only available in macOS 10.15 or newer
            } else {
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:29:20: note: add 'if #available' version check
            } else {
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:20:15: warning: conformance of '_ConditionalContent<TrueContent, FalseContent>' to 'View' is only available in macOS 10.15 or newer
        Group {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:20:15: note: add 'if #available' version check
        Group {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:32: warning: conformance of 'Group<Content>' to 'View' is only available in macOS 10.15 or newer
    public var body: some View {
                               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:32: note: add 'if #available' version check
    public var body: some View {
                               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:44:14: error: 'background(_:ignoresSafeAreaEdges:)' is only available in macOS 12.0 or newer
            .background(Color.red)
             ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:44:14: note: add 'if #available' version check
            .background(Color.red)
             ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:42:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:41:8: note: add @available attribute to enclosing struct
struct DateCell1_Previews: PreviewProvider {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:44:25: error: 'Color' is only available in macOS 10.15 or newer
            .background(Color.red)
                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:44:25: note: add 'if #available' version check
            .background(Color.red)
                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:42:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:41:8: note: add @available attribute to enclosing struct
struct DateCell1_Previews: PreviewProvider {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:44:31: error: 'red' is only available in macOS 10.15 or newer
            .background(Color.red)
                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:44:31: note: add 'if #available' version check
            .background(Color.red)
                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:42:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:41:8: note: add @available attribute to enclosing struct
struct DateCell1_Previews: PreviewProvider {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:27: error: 'View' is only available in macOS 10.15 or newer
    public var body: some View {
                          ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:10:15: note: add @available attribute to enclosing struct
public struct NormalDayCell: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:26:31: error: 'View' is only available in macOS 10.15 or newer
    static var previews: some View {
                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:26:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:25:8: note: add @available attribute to enclosing struct
struct NormalDayCell_Previews: PreviewProvider {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:17:9: error: 'Text' is only available in macOS 10.15 or newer
        Text(date.day)
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:17:9: note: add 'if #available' version check
        Text(date.day)
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:10:15: note: add @available attribute to enclosing struct
public struct NormalDayCell: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:18:14: error: 'padding' is only available in macOS 10.15 or newer
            .padding(8)
             ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:10:15: note: add @available attribute to enclosing struct
public struct NormalDayCell: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:19:14: error: 'background(_:ignoresSafeAreaEdges:)' is only available in macOS 12.0 or newer
            .background(Color.blue)
             ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:10:15: note: add @available attribute to enclosing struct
public struct NormalDayCell: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:19:25: error: 'Color' is only available in macOS 10.15 or newer
            .background(Color.blue)
                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:10:15: note: add @available attribute to enclosing struct
public struct NormalDayCell: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:19:31: error: 'blue' is only available in macOS 10.15 or newer
            .background(Color.blue)
                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:10:15: note: add @available attribute to enclosing struct
public struct NormalDayCell: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:20:14: error: 'cornerRadius(_:antialiased:)' is only available in macOS 10.15 or newer
            .cornerRadius(8)
             ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:10:15: note: add @available attribute to enclosing struct
public struct NormalDayCell: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:21:14: error: 'padding' is only available in macOS 10.15 or newer
            .padding([.bottom], 10)
             ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:21:14: note: add 'if #available' version check
            .padding([.bottom], 10)
             ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:10:15: note: add @available attribute to enclosing struct
public struct NormalDayCell: View {
              ^
[11/11] Compiling DateGrid WeekDaySymbols.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:27: error: 'View' is only available in macOS 10.15 or newer
    public var body: some View {
                          ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:28:31: error: 'View' is only available in macOS 10.15 or newer
    static var previews: some View {
                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:28:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:27:8: note: add @available attribute to enclosing struct
struct WeekDaySymbols_Previews: PreviewProvider {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:15:9: warning: conformance of 'ForEach<Data, ID, Content>' to 'View' is only available in macOS 10.15 or newer
        HStack {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:15:9: note: add 'if #available' version check
        HStack {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:15:9: error: 'HStack' is only available in macOS 10.15 or newer
        HStack {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:15:9: note: add 'if #available' version check
        HStack {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:15:9: warning: conformance of 'ForEach<Data, ID, Content>' to 'View' is only available in macOS 10.15 or newer
        HStack {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:15:9: note: add 'if #available' version check
        HStack {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:16:13: warning: conformance of 'ForEach<Data, ID, Content>' to 'View' is only available in macOS 10.15 or newer
            ForEach(Calendar.current.veryShortWeekdaySymbols, id: \.self) { item in
            ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:16:13: note: add 'if #available' version check
            ForEach(Calendar.current.veryShortWeekdaySymbols, id: \.self) { item in
            ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:16:13: error: 'ForEach' is only available in macOS 10.15 or newer
            ForEach(Calendar.current.veryShortWeekdaySymbols, id: \.self) { item in
            ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:16:13: note: add 'if #available' version check
            ForEach(Calendar.current.veryShortWeekdaySymbols, id: \.self) { item in
            ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:16:13: error: 'init(_:id:content:)' is only available in macOS 10.15 or newer
            ForEach(Calendar.current.veryShortWeekdaySymbols, id: \.self) { item in
            ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:16:13: note: add 'if #available' version check
            ForEach(Calendar.current.veryShortWeekdaySymbols, id: \.self) { item in
            ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:17:17: warning: conformance of 'Spacer' to 'View' is only available in macOS 10.15 or newer
                Spacer()
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:17:17: note: add 'if #available' version check
                Spacer()
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:17:17: error: 'Spacer' is only available in macOS 10.15 or newer
                Spacer()
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:17:17: note: add 'if #available' version check
                Spacer()
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:19:22: warning: conformance of 'Text' to 'View' is only available in macOS 10.15 or newer
                    .bold()
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:19:22: note: add 'if #available' version check
                    .bold()
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:18:17: error: 'Text' is only available in macOS 10.15 or newer
                Text(item)
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:18:17: note: add 'if #available' version check
                Text(item)
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:19:22: error: 'bold()' is only available in macOS 10.15 or newer
                    .bold()
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:19:22: note: add 'if #available' version check
                    .bold()
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:20:17: warning: conformance of 'Spacer' to 'View' is only available in macOS 10.15 or newer
                Spacer()
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:20:17: note: add 'if #available' version check
                Spacer()
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:20:17: error: 'Spacer' is only available in macOS 10.15 or newer
                Spacer()
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:20:17: note: add 'if #available' version check
                Spacer()
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:16:75: error: 'buildBlock' is only available in macOS 10.15 or newer
            ForEach(Calendar.current.veryShortWeekdaySymbols, id: \.self) { item in
                                                                          ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:16:75: note: add 'if #available' version check
            ForEach(Calendar.current.veryShortWeekdaySymbols, id: \.self) { item in
                                                                          ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:15:16: warning: conformance of 'ForEach<Data, ID, Content>' to 'View' is only available in macOS 10.15 or newer
        HStack {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:15:16: note: add 'if #available' version check
        HStack {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:32: warning: conformance of 'ForEach<Data, ID, Content>' to 'View' is only available in macOS 10.15 or newer
    public var body: some View {
                               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:32: note: add 'if #available' version check
    public var body: some View {
                               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
[0/1] Planning build
Building for debugging...
error: emit-module command failed with exit code 1 (use -v to see invocation)
[1/6] Emitting module DateGrid
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:16:6: error: 'State' is only available in macOS 10.15 or newer
    @State private var isShown = false
     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:27: error: 'View' is only available in macOS 10.15 or newer
    public var body: some View {
                          ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:42:31: error: 'View' is only available in macOS 10.15 or newer
    static var previews: some View {
                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:42:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:41:8: note: add @available attribute to enclosing struct
struct DateCell1_Previews: PreviewProvider {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:27: error: 'View' is only available in macOS 10.15 or newer
    public var body: some View {
                          ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:10:15: note: add @available attribute to enclosing struct
public struct NormalDayCell: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:26:31: error: 'View' is only available in macOS 10.15 or newer
    static var previews: some View {
                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:26:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:25:8: note: add @available attribute to enclosing struct
struct NormalDayCell_Previews: PreviewProvider {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:19:24: error: 'Binding' is only available in macOS 10.15 or newer
        selectedMonth: Binding<Date>,
                       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:17:12: note: add @available attribute to enclosing initializer
    public init(
           ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:10:15: note: add @available attribute to enclosing generic struct
public struct DateGrid<DateView>: View where DateView: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:21:10: error: 'ViewBuilder' is only available in macOS 10.15 or newer
        @ViewBuilder content: @escaping (DateGridDate) -> DateView
         ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:17:12: note: add @available attribute to enclosing initializer
    public init(
           ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:10:15: note: add @available attribute to enclosing generic struct
public struct DateGrid<DateView>: View where DateView: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:31:6: error: 'Binding' is only available in macOS 10.15 or newer
    @Binding var selectedMonth: Date
     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:10:15: note: add @available attribute to enclosing generic struct
public struct DateGrid<DateView>: View where DateView: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:33:27: error: 'View' is only available in macOS 10.15 or newer
    public var body: some View {
                          ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:33:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:10:15: note: add @available attribute to enclosing generic struct
public struct DateGrid<DateView>: View where DateView: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:10:56: error: 'View' is only available in macOS 10.15 or newer
public struct DateGrid<DateView>: View where DateView: View {
                                                       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:10:15: note: add @available attribute to enclosing generic struct
public struct DateGrid<DateView>: View where DateView: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:48:6: error: 'State' is only available in macOS 10.15 or newer
    @State static var selectedMonthDate = Date()
     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:46:8: note: add @available attribute to enclosing struct
struct CalendarView_Previews: PreviewProvider {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:50:31: error: 'View' is only available in macOS 10.15 or newer
    static var previews: some View {
                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:50:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:46:8: note: add @available attribute to enclosing struct
struct CalendarView_Previews: PreviewProvider {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:20: error: 'View' is only available in macOS 10.15 or newer
    var body: some View {
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:8: note: add @available attribute to enclosing generic struct
struct MonthsOrWeeks<DateView>: View where DateView: View {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:54: error: 'View' is only available in macOS 10.15 or newer
struct MonthsOrWeeks<DateView>: View where DateView: View {
                                                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:8: note: add @available attribute to enclosing generic struct
struct MonthsOrWeeks<DateView>: View where DateView: View {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGridViewModel.swift:17:20: error: 'calendar' is only available in macOS 10.15 or newer
    @Environment(\.calendar) var calendar
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGridViewModel.swift:10:7: note: add @available attribute to enclosing class
class DateGridViewModel: ObservableObject {
      ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGridViewModel.swift:17:6: error: 'Environment' is only available in macOS 10.15 or newer
    @Environment(\.calendar) var calendar
     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGridViewModel.swift:10:7: note: add @available attribute to enclosing class
class DateGridViewModel: ObservableObject {
      ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGridViewModel.swift:10:26: error: 'ObservableObject' is only available in macOS 10.15 or newer
class DateGridViewModel: ObservableObject {
                         ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGridViewModel.swift:10:7: note: add @available attribute to enclosing class
class DateGridViewModel: ObservableObject {
      ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:27: error: 'View' is only available in macOS 10.15 or newer
    public var body: some View {
                          ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:28:31: error: 'View' is only available in macOS 10.15 or newer
    static var previews: some View {
                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:28:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:27:8: note: add @available attribute to enclosing struct
struct WeekDaySymbols_Previews: PreviewProvider {
       ^
[2/6] Compiling DateGrid DateGridViewModel.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGridViewModel.swift:17:20: error: 'calendar' is only available in macOS 10.15 or newer
    @Environment(\.calendar) var calendar
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGridViewModel.swift:10:7: note: add @available attribute to enclosing class
class DateGridViewModel: ObservableObject {
      ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGridViewModel.swift:17:6: error: 'Environment' is only available in macOS 10.15 or newer
    @Environment(\.calendar) var calendar
     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGridViewModel.swift:10:7: note: add @available attribute to enclosing class
class DateGridViewModel: ObservableObject {
      ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGridViewModel.swift:10:26: error: 'ObservableObject' is only available in macOS 10.15 or newer
class DateGridViewModel: ObservableObject {
                         ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGridViewModel.swift:10:7: note: add @available attribute to enclosing class
class DateGridViewModel: ObservableObject {
      ^
[3/6] Compiling DateGrid DateCell1.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:16:6: error: 'State' is only available in macOS 10.15 or newer
    @State private var isShown = false
     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:27: error: 'View' is only available in macOS 10.15 or newer
    public var body: some View {
                          ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:42:31: error: 'View' is only available in macOS 10.15 or newer
    static var previews: some View {
                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:42:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:41:8: note: add @available attribute to enclosing struct
struct DateCell1_Previews: PreviewProvider {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:20:9: warning: conformance of 'Group<Content>' to 'View' is only available in macOS 10.15 or newer
        Group {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:20:9: note: add 'if #available' version check
        Group {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:20:9: error: 'Group' is only available in macOS 10.15 or newer
        Group {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:20:9: note: add 'if #available' version check
        Group {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:20:9: error: 'init(content:)' is only available in macOS 10.15 or newer
        Group {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:20:9: note: add 'if #available' version check
        Group {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:22:17: error: 'Text' is only available in macOS 10.15 or newer
                Text(date.day)
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:22:17: note: add 'if #available' version check
                Text(date.day)
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:23:22: error: 'padding' is only available in macOS 10.15 or newer
                    .padding(8)
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:23:22: note: add 'if #available' version check
                    .padding(8)
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:24:22: error: 'background(_:ignoresSafeAreaEdges:)' is only available in macOS 12.0 or newer
                    .background(Color.purple)
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:24:22: note: add 'if #available' version check
                    .background(Color.purple)
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:24:33: error: 'Color' is only available in macOS 10.15 or newer
                    .background(Color.purple)
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:24:33: note: add 'if #available' version check
                    .background(Color.purple)
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:24:39: error: 'purple' is only available in macOS 10.15 or newer
                    .background(Color.purple)
                                      ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:24:39: note: add 'if #available' version check
                    .background(Color.purple)
                                      ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:25:22: error: 'cornerRadius(_:antialiased:)' is only available in macOS 10.15 or newer
                    .cornerRadius(20)
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:25:22: note: add 'if #available' version check
                    .cornerRadius(20)
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:26:22: error: 'padding' is only available in macOS 10.15 or newer
                    .padding(.bottom, 10)
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:26:22: note: add 'if #available' version check
                    .padding(.bottom, 10)
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:22: error: 'transition' is only available in macOS 10.15 or newer
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:22: note: add 'if #available' version check
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:33: error: 'AnyTransition' is only available in macOS 10.15 or newer
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:33: note: add 'if #available' version check
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:47: error: 'scale' is only available in macOS 10.15 or newer
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:47: note: add 'if #available' version check
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:53: error: 'animation' is only available in macOS 10.15 or newer
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                                    ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:53: note: add 'if #available' version check
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                                    ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:63: error: 'Animation' is only available in macOS 10.15 or newer
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:63: note: add 'if #available' version check
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:73: error: 'spring(response:dampingFraction:blendDuration:)' is only available in macOS 10.15 or newer
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:73: note: add 'if #available' version check
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:82: error: 'delay' is only available in macOS 10.15 or newer
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                                                                 ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:27:82: note: add 'if #available' version check
                    .transition(AnyTransition.scale.animation(Animation.spring().delay(Double(date.day)!/30)))
                                                                                 ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:21:24: error: 'buildEither(first:)' is only available in macOS 10.15 or newer
            if isShown {
                       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:21:24: note: add 'if #available' version check
            if isShown {
                       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:30:17: error: 'Text' is only available in macOS 10.15 or newer
                Text("")
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:30:17: note: add 'if #available' version check
                Text("")
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:31:22: error: 'onAppear(perform:)' is only available in macOS 10.15 or newer
                    .onAppear(perform: {
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:31:22: note: add 'if #available' version check
                    .onAppear(perform: {
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:32:25: error: 'withAnimation' is only available in macOS 10.15 or newer
                        withAnimation {
                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:32:25: note: add 'if #available' version check
                        withAnimation {
                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:29:20: error: 'buildEither(second:)' is only available in macOS 10.15 or newer
            } else {
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:29:20: note: add 'if #available' version check
            } else {
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:20:15: warning: conformance of '_ConditionalContent<TrueContent, FalseContent>' to 'View' is only available in macOS 10.15 or newer
        Group {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:20:15: note: add 'if #available' version check
        Group {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:32: warning: conformance of 'Group<Content>' to 'View' is only available in macOS 10.15 or newer
    public var body: some View {
                               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:32: note: add 'if #available' version check
    public var body: some View {
                               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:19:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:10:15: note: add @available attribute to enclosing struct
public struct DateCell1: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:44:14: error: 'background(_:ignoresSafeAreaEdges:)' is only available in macOS 12.0 or newer
            .background(Color.red)
             ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:44:14: note: add 'if #available' version check
            .background(Color.red)
             ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:42:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:41:8: note: add @available attribute to enclosing struct
struct DateCell1_Previews: PreviewProvider {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:44:25: error: 'Color' is only available in macOS 10.15 or newer
            .background(Color.red)
                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:44:25: note: add 'if #available' version check
            .background(Color.red)
                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:42:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:41:8: note: add @available attribute to enclosing struct
struct DateCell1_Previews: PreviewProvider {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:44:31: error: 'red' is only available in macOS 10.15 or newer
            .background(Color.red)
                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:44:31: note: add 'if #available' version check
            .background(Color.red)
                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:42:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/DateCell1.swift:41:8: note: add @available attribute to enclosing struct
struct DateCell1_Previews: PreviewProvider {
       ^
[4/6] Compiling DateGrid NormalDayCell.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:27: error: 'View' is only available in macOS 10.15 or newer
    public var body: some View {
                          ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:10:15: note: add @available attribute to enclosing struct
public struct NormalDayCell: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:26:31: error: 'View' is only available in macOS 10.15 or newer
    static var previews: some View {
                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:26:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:25:8: note: add @available attribute to enclosing struct
struct NormalDayCell_Previews: PreviewProvider {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:17:9: error: 'Text' is only available in macOS 10.15 or newer
        Text(date.day)
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:17:9: note: add 'if #available' version check
        Text(date.day)
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:10:15: note: add @available attribute to enclosing struct
public struct NormalDayCell: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:18:14: error: 'padding' is only available in macOS 10.15 or newer
            .padding(8)
             ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:10:15: note: add @available attribute to enclosing struct
public struct NormalDayCell: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:19:14: error: 'background(_:ignoresSafeAreaEdges:)' is only available in macOS 12.0 or newer
            .background(Color.blue)
             ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:10:15: note: add @available attribute to enclosing struct
public struct NormalDayCell: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:19:25: error: 'Color' is only available in macOS 10.15 or newer
            .background(Color.blue)
                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:10:15: note: add @available attribute to enclosing struct
public struct NormalDayCell: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:19:31: error: 'blue' is only available in macOS 10.15 or newer
            .background(Color.blue)
                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:10:15: note: add @available attribute to enclosing struct
public struct NormalDayCell: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:20:14: error: 'cornerRadius(_:antialiased:)' is only available in macOS 10.15 or newer
            .cornerRadius(8)
             ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:10:15: note: add @available attribute to enclosing struct
public struct NormalDayCell: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:21:14: error: 'padding' is only available in macOS 10.15 or newer
            .padding([.bottom], 10)
             ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:21:14: note: add 'if #available' version check
            .padding([.bottom], 10)
             ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:16:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/Cell/NormalDayCell.swift:10:15: note: add @available attribute to enclosing struct
public struct NormalDayCell: View {
              ^
[5/6] Compiling DateGrid WeekDaySymbols.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:27: error: 'View' is only available in macOS 10.15 or newer
    public var body: some View {
                          ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:28:31: error: 'View' is only available in macOS 10.15 or newer
    static var previews: some View {
                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:28:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:27:8: note: add @available attribute to enclosing struct
struct WeekDaySymbols_Previews: PreviewProvider {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:15:9: warning: conformance of 'ForEach<Data, ID, Content>' to 'View' is only available in macOS 10.15 or newer
        HStack {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:15:9: note: add 'if #available' version check
        HStack {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:15:9: error: 'HStack' is only available in macOS 10.15 or newer
        HStack {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:15:9: note: add 'if #available' version check
        HStack {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:15:9: warning: conformance of 'ForEach<Data, ID, Content>' to 'View' is only available in macOS 10.15 or newer
        HStack {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:15:9: note: add 'if #available' version check
        HStack {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:16:13: warning: conformance of 'ForEach<Data, ID, Content>' to 'View' is only available in macOS 10.15 or newer
            ForEach(Calendar.current.veryShortWeekdaySymbols, id: \.self) { item in
            ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:16:13: note: add 'if #available' version check
            ForEach(Calendar.current.veryShortWeekdaySymbols, id: \.self) { item in
            ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:16:13: error: 'ForEach' is only available in macOS 10.15 or newer
            ForEach(Calendar.current.veryShortWeekdaySymbols, id: \.self) { item in
            ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:16:13: note: add 'if #available' version check
            ForEach(Calendar.current.veryShortWeekdaySymbols, id: \.self) { item in
            ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:16:13: error: 'init(_:id:content:)' is only available in macOS 10.15 or newer
            ForEach(Calendar.current.veryShortWeekdaySymbols, id: \.self) { item in
            ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:16:13: note: add 'if #available' version check
            ForEach(Calendar.current.veryShortWeekdaySymbols, id: \.self) { item in
            ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:17:17: warning: conformance of 'Spacer' to 'View' is only available in macOS 10.15 or newer
                Spacer()
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:17:17: note: add 'if #available' version check
                Spacer()
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:17:17: error: 'Spacer' is only available in macOS 10.15 or newer
                Spacer()
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:17:17: note: add 'if #available' version check
                Spacer()
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:19:22: warning: conformance of 'Text' to 'View' is only available in macOS 10.15 or newer
                    .bold()
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:19:22: note: add 'if #available' version check
                    .bold()
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:18:17: error: 'Text' is only available in macOS 10.15 or newer
                Text(item)
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:18:17: note: add 'if #available' version check
                Text(item)
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:19:22: error: 'bold()' is only available in macOS 10.15 or newer
                    .bold()
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:19:22: note: add 'if #available' version check
                    .bold()
                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:20:17: warning: conformance of 'Spacer' to 'View' is only available in macOS 10.15 or newer
                Spacer()
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:20:17: note: add 'if #available' version check
                Spacer()
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:20:17: error: 'Spacer' is only available in macOS 10.15 or newer
                Spacer()
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:20:17: note: add 'if #available' version check
                Spacer()
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:16:75: error: 'buildBlock' is only available in macOS 10.15 or newer
            ForEach(Calendar.current.veryShortWeekdaySymbols, id: \.self) { item in
                                                                          ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:16:75: note: add 'if #available' version check
            ForEach(Calendar.current.veryShortWeekdaySymbols, id: \.self) { item in
                                                                          ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:15:16: warning: conformance of 'ForEach<Data, ID, Content>' to 'View' is only available in macOS 10.15 or newer
        HStack {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:15:16: note: add 'if #available' version check
        HStack {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:32: warning: conformance of 'ForEach<Data, ID, Content>' to 'View' is only available in macOS 10.15 or newer
    public var body: some View {
                               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:32: note: add 'if #available' version check
    public var body: some View {
                               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:14:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/WeekDaySymbols/WeekDaySymbols.swift:10:15: note: add @available attribute to enclosing struct
public struct WeekDaySymbols: View {
              ^
[6/6] Compiling DateGrid DateGrid.swift
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:19:24: error: 'Binding' is only available in macOS 10.15 or newer
        selectedMonth: Binding<Date>,
                       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:17:12: note: add @available attribute to enclosing initializer
    public init(
           ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:10:15: note: add @available attribute to enclosing generic struct
public struct DateGrid<DateView>: View where DateView: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:21:10: error: 'ViewBuilder' is only available in macOS 10.15 or newer
        @ViewBuilder content: @escaping (DateGridDate) -> DateView
         ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:17:12: note: add @available attribute to enclosing initializer
    public init(
           ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:10:15: note: add @available attribute to enclosing generic struct
public struct DateGrid<DateView>: View where DateView: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:31:6: error: 'Binding' is only available in macOS 10.15 or newer
    @Binding var selectedMonth: Date
     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:10:15: note: add @available attribute to enclosing generic struct
public struct DateGrid<DateView>: View where DateView: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:33:27: error: 'View' is only available in macOS 10.15 or newer
    public var body: some View {
                          ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:33:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:10:15: note: add @available attribute to enclosing generic struct
public struct DateGrid<DateView>: View where DateView: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:10:56: error: 'View' is only available in macOS 10.15 or newer
public struct DateGrid<DateView>: View where DateView: View {
                                                       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:10:15: note: add @available attribute to enclosing generic struct
public struct DateGrid<DateView>: View where DateView: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:48:6: error: 'State' is only available in macOS 10.15 or newer
    @State static var selectedMonthDate = Date()
     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:46:8: note: add @available attribute to enclosing struct
struct CalendarView_Previews: PreviewProvider {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:50:31: error: 'View' is only available in macOS 10.15 or newer
    static var previews: some View {
                              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:50:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:46:8: note: add @available attribute to enclosing struct
struct CalendarView_Previews: PreviewProvider {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:20: error: 'View' is only available in macOS 10.15 or newer
    var body: some View {
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:8: note: add @available attribute to enclosing generic struct
struct MonthsOrWeeks<DateView>: View where DateView: View {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:54: error: 'View' is only available in macOS 10.15 or newer
struct MonthsOrWeeks<DateView>: View where DateView: View {
                                                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:8: note: add @available attribute to enclosing generic struct
struct MonthsOrWeeks<DateView>: View where DateView: View {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:35:9: error: 'TabView' is only available in macOS 10.15 or newer
        TabView(selection: $selectedMonth) {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:35:9: note: add 'if #available' version check
        TabView(selection: $selectedMonth) {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:33:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:10:15: note: add @available attribute to enclosing generic struct
public struct DateGrid<DateView>: View where DateView: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:39:10: error: 'frame(width:height:alignment:)' is only available in macOS 10.15 or newer
        .frame(height: viewModel.mode.estimateHeight, alignment: .center)
         ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:33:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:10:15: note: add @available attribute to enclosing generic struct
public struct DateGrid<DateView>: View where DateView: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:39:67: error: 'center' is only available in macOS 10.15 or newer
        .frame(height: viewModel.mode.estimateHeight, alignment: .center)
                                                                  ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:33:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:10:15: note: add @available attribute to enclosing generic struct
public struct DateGrid<DateView>: View where DateView: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:40:10: error: 'tabViewStyle' is only available in macOS 11.0 or newer
        .tabViewStyle(PageTabViewStyle(indexDisplayMode: .never))
         ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:40:10: note: add 'if #available' version check
        .tabViewStyle(PageTabViewStyle(indexDisplayMode: .never))
         ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:33:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:10:15: note: add @available attribute to enclosing generic struct
public struct DateGrid<DateView>: View where DateView: View {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:40:23: error: 'PageTabViewStyle' is unavailable in macOS
        .tabViewStyle(PageTabViewStyle(indexDisplayMode: .never))
                      ^~~~~~~~~~~~~~~~
SwiftUI.PageTabViewStyle:3:15: note: 'PageTabViewStyle' has been explicitly marked unavailable here
public struct PageTabViewStyle : TabViewStyle {
              ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:51:9: error: 'VStack' is only available in macOS 10.15 or newer
        VStack {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:51:9: note: add 'if #available' version check
        VStack {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:50:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:46:8: note: add @available attribute to enclosing struct
struct CalendarView_Previews: PreviewProvider {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:52:13: warning: conformance of 'Text' to 'View' is only available in macOS 10.15 or newer
            Text(selectedMonthDate.description)
            ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:52:13: note: add 'if #available' version check
            Text(selectedMonthDate.description)
            ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:50:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:46:8: note: add @available attribute to enclosing struct
struct CalendarView_Previews: PreviewProvider {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:52:13: error: 'Text' is only available in macOS 10.15 or newer
            Text(selectedMonthDate.description)
            ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:52:13: note: add 'if #available' version check
            Text(selectedMonthDate.description)
            ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:50:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:46:8: note: add @available attribute to enclosing struct
struct CalendarView_Previews: PreviewProvider {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:51:16: error: 'buildBlock' is only available in macOS 10.15 or newer
        VStack {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:51:16: note: add 'if #available' version check
        VStack {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:50:16: note: add @available attribute to enclosing static property
    static var previews: some View {
               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:46:8: note: add @available attribute to enclosing struct
struct CalendarView_Previews: PreviewProvider {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGridViewModel.swift:17:20: error: 'calendar' is only available in macOS 10.15 or newer
    @Environment(\.calendar) var calendar
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGridViewModel.swift:10:7: note: add @available attribute to enclosing class
class DateGridViewModel: ObservableObject {
      ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:77:9: warning: conformance of 'ForEach<Data, ID, Content>' to 'View' is only available in macOS 10.15 or newer
        ForEach(viewModel.monthsOrWeeks, id: \.self) { monthOrWeek in
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:77:9: note: add 'if #available' version check
        ForEach(viewModel.monthsOrWeeks, id: \.self) { monthOrWeek in
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:8: note: add @available attribute to enclosing generic struct
struct MonthsOrWeeks<DateView>: View where DateView: View {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:77:9: error: 'ForEach' is only available in macOS 10.15 or newer
        ForEach(viewModel.monthsOrWeeks, id: \.self) { monthOrWeek in
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:77:9: note: add 'if #available' version check
        ForEach(viewModel.monthsOrWeeks, id: \.self) { monthOrWeek in
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:8: note: add @available attribute to enclosing generic struct
struct MonthsOrWeeks<DateView>: View where DateView: View {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:77:9: error: 'init(_:id:content:)' is only available in macOS 10.15 or newer
        ForEach(viewModel.monthsOrWeeks, id: \.self) { monthOrWeek in
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:77:9: note: add 'if #available' version check
        ForEach(viewModel.monthsOrWeeks, id: \.self) { monthOrWeek in
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:8: note: add @available attribute to enclosing generic struct
struct MonthsOrWeeks<DateView>: View where DateView: View {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:77:54: warning: conformance of 'ForEach<Data, ID, Content>' to 'View' is only available in macOS 10.15 or newer
        ForEach(viewModel.monthsOrWeeks, id: \.self) { monthOrWeek in
                                                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:77:54: note: add 'if #available' version check
        ForEach(viewModel.monthsOrWeeks, id: \.self) { monthOrWeek in
                                                     ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:8: note: add @available attribute to enclosing generic struct
struct MonthsOrWeeks<DateView>: View where DateView: View {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:79:13: error: 'VStack' is only available in macOS 10.15 or newer
            VStack {
            ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:79:13: note: add 'if #available' version check
            VStack {
            ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:8: note: add @available attribute to enclosing generic struct
struct MonthsOrWeeks<DateView>: View where DateView: View {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:79:20: warning: conformance of 'ForEach<Data, ID, Content>' to 'View' is only available in macOS 10.15 or newer
            VStack {
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:79:20: note: add 'if #available' version check
            VStack {
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:8: note: add @available attribute to enclosing generic struct
struct MonthsOrWeeks<DateView>: View where DateView: View {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:81:17: error: 'LazyVGrid' is only available in macOS 11.0 or newer
                LazyVGrid(columns: Array(repeating: GridItem(.flexible()), count: numberOfDaysInAWeek), spacing: 0) {
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:81:17: note: add 'if #available' version check
                LazyVGrid(columns: Array(repeating: GridItem(.flexible()), count: numberOfDaysInAWeek), spacing: 0) {
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:8: note: add @available attribute to enclosing generic struct
struct MonthsOrWeeks<DateView>: View where DateView: View {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:81:17: warning: conformance of 'ForEach<Data, ID, Content>' to 'View' is only available in macOS 10.15 or newer
                LazyVGrid(columns: Array(repeating: GridItem(.flexible()), count: numberOfDaysInAWeek), spacing: 0) {
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:81:17: note: add 'if #available' version check
                LazyVGrid(columns: Array(repeating: GridItem(.flexible()), count: numberOfDaysInAWeek), spacing: 0) {
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:8: note: add @available attribute to enclosing generic struct
struct MonthsOrWeeks<DateView>: View where DateView: View {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:81:53: error: 'GridItem' is only available in macOS 11.0 or newer
                LazyVGrid(columns: Array(repeating: GridItem(.flexible()), count: numberOfDaysInAWeek), spacing: 0) {
                                                    ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:81:53: note: add 'if #available' version check
                LazyVGrid(columns: Array(repeating: GridItem(.flexible()), count: numberOfDaysInAWeek), spacing: 0) {
                                                    ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:8: note: add @available attribute to enclosing generic struct
struct MonthsOrWeeks<DateView>: View where DateView: View {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:83:21: warning: conformance of 'ForEach<Data, ID, Content>' to 'View' is only available in macOS 10.15 or newer
                    ForEach(viewModel.days(for: monthOrWeek), id: \.self) { date in
                    ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:83:21: note: add 'if #available' version check
                    ForEach(viewModel.days(for: monthOrWeek), id: \.self) { date in
                    ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:8: note: add @available attribute to enclosing generic struct
struct MonthsOrWeeks<DateView>: View where DateView: View {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:83:21: error: 'ForEach' is only available in macOS 10.15 or newer
                    ForEach(viewModel.days(for: monthOrWeek), id: \.self) { date in
                    ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:83:21: note: add 'if #available' version check
                    ForEach(viewModel.days(for: monthOrWeek), id: \.self) { date in
                    ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:8: note: add @available attribute to enclosing generic struct
struct MonthsOrWeeks<DateView>: View where DateView: View {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:83:21: error: 'init(_:id:content:)' is only available in macOS 10.15 or newer
                    ForEach(viewModel.days(for: monthOrWeek), id: \.self) { date in
                    ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:83:21: note: add 'if #available' version check
                    ForEach(viewModel.days(for: monthOrWeek), id: \.self) { date in
                    ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:8: note: add @available attribute to enclosing generic struct
struct MonthsOrWeeks<DateView>: View where DateView: View {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:88:34: error: 'id' is only available in macOS 10.15 or newer
                                .id(date)
                                 ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:88:34: note: add 'if #available' version check
                                .id(date)
                                 ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:8: note: add @available attribute to enclosing generic struct
struct MonthsOrWeeks<DateView>: View where DateView: View {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:86:105: error: 'buildEither(first:)' is only available in macOS 10.15 or newer
                        if viewModel.calendar.isDate(date, equalTo: monthOrWeek, toGranularity: .month) {
                                                                                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:86:105: note: add 'if #available' version check
                        if viewModel.calendar.isDate(date, equalTo: monthOrWeek, toGranularity: .month) {
                                                                                                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:8: note: add @available attribute to enclosing generic struct
struct MonthsOrWeeks<DateView>: View where DateView: View {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:92:34: error: 'hidden()' is only available in macOS 10.15 or newer
                                .hidden()
                                 ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:92:34: note: add 'if #available' version check
                                .hidden()
                                 ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:8: note: add @available attribute to enclosing generic struct
struct MonthsOrWeeks<DateView>: View where DateView: View {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:90:32: error: 'buildEither(second:)' is only available in macOS 10.15 or newer
                        } else {
                               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:90:32: note: add 'if #available' version check
                        } else {
                               ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:8: note: add @available attribute to enclosing generic struct
struct MonthsOrWeeks<DateView>: View where DateView: View {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:83:75: warning: conformance of '_ConditionalContent<TrueContent, FalseContent>' to 'View' is only available in macOS 10.15 or newer
                    ForEach(viewModel.days(for: monthOrWeek), id: \.self) { date in
                                                                          ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:83:75: note: add 'if #available' version check
                    ForEach(viewModel.days(for: monthOrWeek), id: \.self) { date in
                                                                          ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:8: note: add @available attribute to enclosing generic struct
struct MonthsOrWeeks<DateView>: View where DateView: View {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:81:117: warning: conformance of 'ForEach<Data, ID, Content>' to 'View' is only available in macOS 10.15 or newer
                LazyVGrid(columns: Array(repeating: GridItem(.flexible()), count: numberOfDaysInAWeek), spacing: 0) {
                                                                                                                    ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:81:117: note: add 'if #available' version check
                LazyVGrid(columns: Array(repeating: GridItem(.flexible()), count: numberOfDaysInAWeek), spacing: 0) {
                                                                                                                    ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:8: note: add @available attribute to enclosing generic struct
struct MonthsOrWeeks<DateView>: View where DateView: View {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:96:18: error: 'tag' is only available in macOS 10.15 or newer
                .tag(monthOrWeek)
                 ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:96:18: note: add 'if #available' version check
                .tag(monthOrWeek)
                 ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:8: note: add @available attribute to enclosing generic struct
struct MonthsOrWeeks<DateView>: View where DateView: View {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:98:17: warning: conformance of 'Spacer' to 'View' is only available in macOS 10.15 or newer
                Spacer()
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:98:17: note: add 'if #available' version check
                Spacer()
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:8: note: add @available attribute to enclosing generic struct
struct MonthsOrWeeks<DateView>: View where DateView: View {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:98:17: error: 'Spacer' is only available in macOS 10.15 or newer
                Spacer()
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:98:17: note: add 'if #available' version check
                Spacer()
                ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:8: note: add @available attribute to enclosing generic struct
struct MonthsOrWeeks<DateView>: View where DateView: View {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:79:20: error: 'buildBlock' is only available in macOS 10.15 or newer
            VStack {
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:79:20: note: add 'if #available' version check
            VStack {
                   ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:8: note: add @available attribute to enclosing generic struct
struct MonthsOrWeeks<DateView>: View where DateView: View {
       ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:25: warning: conformance of 'ForEach<Data, ID, Content>' to 'View' is only available in macOS 10.15 or newer
    var body: some View {
                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:25: note: add 'if #available' version check
    var body: some View {
                        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:76:9: note: add @available attribute to enclosing property
    var body: some View {
        ^
/Users/builder/builds/o86TiJKT/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/DateGrid/DateGrid.swift:72:8: note: add @available attribute to enclosing generic struct
struct MonthsOrWeeks<DateView>: View where DateView: View {
       ^
BUILD FAILURE 5.8 macosSpm