Swift Package Index

Build Information

Failed to build Prelude, reference master (a048b7), with Swift 6.4 for macOS (SPM) on 15 Sep 2026 19:40:54 UTC.

Build Command

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

Build Log

========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
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Clone URL: https://github.com/robrix/Prelude.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/robrix/Prelude
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at a048b7a Merge pull request #61 from nxtstep/doc/swift-package-manager
Cloned https://github.com/robrix/Prelude.git
Revision (git rev-parse @):
a048b7af84fc25a1fd0af62e1dfe34c685cd446f
SUCCESS checkout https://github.com/robrix/Prelude.git at master
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/robrix/Prelude.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64
Building for debugging...
[Planning deferred tasks]
error: SWIFT_VERSION '3' is unsupported, supported versions are: 4.0, 4.2, 5.0, 6.0.
error: Build failed
BUILD FAILURE 6.4 macosSpm