PythonKit – Build Information – Swift Package Index

Build Information

Failed to build PythonKit, reference 0.0.1 (977002), with Swift 6.4 for macOS (SPM) on 20 Sep 2026 04:07:31 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
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Builder version: 5.1.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/kongzii/PythonKit.git
Reference: 0.0.1
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/kongzii/PythonKit
 * tag               0.0.1      -> FETCH_HEAD
HEAD is now at 977002d Versioned LoggerKit
Cloned https://github.com/kongzii/PythonKit.git
Revision (git rev-parse @):
977002d1f5cad96c84360d0ad4496ec614c58975
SUCCESS checkout https://github.com/kongzii/PythonKit.git at 0.0.1
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/kongzii/PythonKit.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64
Building for debugging...
[Constructing description]
[Planning deferred tasks]
[42 / 82]
[54 / 96] Rainbow
[54 / 117] ArgumentParser
[58 / 146]
[61 / 146]
[64 / 146]
[67 / 146] Rainbow
[68 / 146]
[80 / 147]
[82 / 147] LoggerKit
[82 / 149]
[90 / 149]
Fetching https://github.com/kongzii/LoggerKit.git
Fetching https://github.com/apple/swift-argument-parser
[1/369] Fetching loggerkit
[370/19287] Fetching loggerkit, swift-argument-parser
Fetched https://github.com/kongzii/LoggerKit.git (2.08s)
Fetched https://github.com/apple/swift-argument-parser (2.08s)
Computing version for https://github.com/kongzii/LoggerKit.git
Computed https://github.com/kongzii/LoggerKit.git at 0.0.0 (2.77s)
Fetching https://github.com/onevcat/Rainbow
[1/1478] Fetching rainbow
Fetched https://github.com/onevcat/Rainbow (1.05s)
Computing version for https://github.com/apple/swift-argument-parser
Computed https://github.com/apple/swift-argument-parser at 0.0.6 (1.71s)
Computing version for https://github.com/onevcat/Rainbow
Computed https://github.com/onevcat/Rainbow at 3.2.0 (2.14s)
Creating working copy for https://github.com/kongzii/LoggerKit.git
Working copy of https://github.com/kongzii/LoggerKit.git resolved at 0.0.0
Creating working copy for https://github.com/apple/swift-argument-parser
Working copy of https://github.com/apple/swift-argument-parser resolved at 0.0.6
Creating working copy for https://github.com/onevcat/Rainbow
Working copy of https://github.com/onevcat/Rainbow resolved at 3.2.0
error: SwiftCompile normal arm64 failed with a nonzero exit code. Command line:     cd /Users/admin/builder

/Users/admin/builder/spi-builder-workspace/PythonKit/Python.swift:40:17: [1;31merror: [1;39mtype referenced from a stored property in a '@frozen' struct must be '@usableFromInline' or public[0;0m
  [0;36m26 |[0;0m /// Typealias used when passing or returning a `PyObject` pointer with
  [0;36m27 |[0;0m /// implied ownership.
  [0;36m28 |[0;0m typealias OwnedPyObjectPointer = PyObjectPointer
     [0;36m|[0;0m           `- [1;39mnote: [1;39mtype declared here[0;0m
  [0;36m29 |[0;0m
  [0;36m30 |[0;0m /// A primitive reference to a Python C API `PyObject`.
     [0;36m:[0;0m
  [0;36m38 |[0;0m @usableFromInline @_fixed_layout
  [0;36m39 |[0;0m final class PyReference {
  [0;36m40 |[0;0m     private var pointer: [4;39mOwnedPyObjectPointer[0;0m
     [0;36m|[0;0m                 `- [1;31merror: [1;39mtype referenced from a stored property in a '@frozen' struct must be '@usableFromInline' or public[0;0m
  [0;36m41 |[0;0m
  [0;36m42 |[0;0m     // This `PyReference`, once deleted, will make no delta change to the
Failed frontend command:
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /Users/admin/builder/spi-builder-workspace/PythonKit/NumpyConversion.swift /Users/admin/builder/spi-builder-workspace/PythonKit/Python.swift /Users/admin/builder/spi-builder-workspace/PythonKit/PythonLibrary+Symbols.swift /Users/admin/builder/spi-builder-workspace/PythonKit/PythonLibrary.swift -target arm64-apple-macos12.0 -module-can-import-version Darwin 428.0.10 0 -disable-cross-import-overlay-search -swift-module-cross-import Darwin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/Darwin.swiftcrossimport/xlocale.swiftoverlay -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libSwiftMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#SwiftMacros -disable-implicit-swift-modules -Xcc -fno-implicit-modules -Xcc -fno-implicit-module-maps -explicit-swift-module-map-file /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/PythonKit.build/Debug/PythonKit-t.build/Objects-normal/arm64/PythonKit-dependencies-1.json -Xllvm -aarch64-use-tbi -enable-objc-interop -stack-check -sdk /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk -I /Users/admin/builder/spi-builder-workspace/.build/out/Products/Debug -Isystem /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.build/out/Products/Debug -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -module-cache-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftExplicitPrecompiledModules -color-diagnostics -Xcc -fcolor-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -swift-version 5 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -D Xcode -serialize-debugging-options -enable-experimental-feature DebugDescriptionMacro -empty-abi-descriptor -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.build/out/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /Users/admin/builder -enable-anonymous-context-mangled-names -file-compilation-dir /Users/admin/builder -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.build/out/SDKStatCaches.noindex/macosx27.0-26A425-80c5bbf1d171475443272936d42f90a36a22442a12e9d48fe1a705f55a1adfc4.sdkstatcache -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/PythonKit.build/Debug/PythonKit-t.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/PythonKit.build/Debug/PythonKit-t.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/PythonKit.build/Debug/PythonKit-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name PythonKit -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/PythonKit.build/Debug/PythonKit-t.build/Objects-normal/arm64/PythonKit_const_extract_protocols.json -disable-clang-spi -clang-target arm64-apple-macos27.0 -target-sdk-version 27.0 -target-sdk-name macosx27.0 -in-process-plugin-server-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/libSwiftInProcPluginServer.dylib -emit-module-doc-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/PythonKit.build/Debug/PythonKit-t.build/Objects-normal/arm64/PythonKit.swiftdoc -emit-module-source-info-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/PythonKit.build/Debug/PythonKit-t.build/Objects-normal/arm64/PythonKit.swiftsourceinfo -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/PythonKit.build/Debug/PythonKit-t.build/Objects-normal/arm64/PythonKit-Swift.h -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/PythonKit.build/Debug/PythonKit-t.build/Objects-normal/arm64/PythonKit-primary-emit-module.dia -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/PythonKit.build/Debug/PythonKit-t.build/Objects-normal/arm64/PythonKit-primary-emit-module.d -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/PythonKit.build/Debug/PythonKit-t.build/Objects-normal/arm64/PythonKit.swiftmodule -emit-abi-descriptor-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/PythonKit.build/Debug/PythonKit-t.build/Objects-normal/arm64/PythonKit.abi.json
error: Build failed
BUILD FAILURE 6.4 macosSpm