Swift Package Index

Build Information

Failed to build mlx-swift, reference 0.31.7 (12e329), with Swift 6.1 for macOS (SPM) on 16 Oct 2026 03:24:41 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64

Build Log

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RunAll
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Builder version: 5.1.3
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/drewster99/mlx-swift.git
Reference: 0.31.7
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/drewster99/mlx-swift
 * tag               0.31.7     -> FETCH_HEAD
HEAD is now at 12e329a Use MLX core fix for empty Metal bindings
Submodule path 'Source/Cmlx/mlx': checked out '547a41ce71f1b24f8dbf0f66db923fe80aa01602'
Submodule path 'Source/Cmlx/mlx-c': checked out '0726ca922fc902c4c61ef9c27d94132be418e945'
Submodule 'submodules/mlx' (https://github.com/drewster99/mlx) registered for path 'Source/Cmlx/mlx'
Submodule 'submodules/mlx-c' (https://github.com/ml-explore/mlx-c) registered for path 'Source/Cmlx/mlx-c'
Cloning into '/Users/admin/builder/spi-builder-workspace/Source/Cmlx/mlx'...
Cloning into '/Users/admin/builder/spi-builder-workspace/Source/Cmlx/mlx-c'...
Cloned https://github.com/drewster99/mlx-swift.git
Revision (git rev-parse @):
12e329a6dcb281010d800535d7a42fd67c8602cf
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/drewster99/mlx-swift.git at 0.31.7
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Build
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Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/drewster99/mlx-swift.git
https://github.com/drewster99/mlx-swift.git
error: 'spi-builder-workspace': package 'spi-builder-workspace' is using Swift tools version 6.3.0 but the installed version is 6.1.0
error: fatalError
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures
error: 'spi-builder-workspace': package 'spi-builder-workspace' is using Swift tools version 6.3.0 but the installed version is 6.1.0
error: 'spi-builder-workspace': package 'spi-builder-workspace' is using Swift tools version 6.3.0 but the installed version is 6.1.0
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64
error: 'spi-builder-workspace': package 'spi-builder-workspace' is using Swift tools version 6.3.0 but the installed version is 6.1.0
error: 'spi-builder-workspace': package 'spi-builder-workspace' is using Swift tools version 6.3.0 but the installed version is 6.1.0
BUILD FAILURE 6.1 macosSpm