Swift Package Index

Build Information

Failed to build mlx-libraries, reference 2.29.1 (9bff95), with Swift 6.4 for Wasm on 23 Sep 2026 05:10:28 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-53886769-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:wasm-6.4-latest swift build --swift-sdk swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/ml-explore/mlx-swift-examples.git
Reference: 2.29.1
Initialized empty Git repository in /host/spi-builder-workspace/.git/
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: 	git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: 	git branch -m <name>
From https://github.com/ml-explore/mlx-swift-examples
 * tag               2.29.1     -> FETCH_HEAD
HEAD is now at 9bff95c mlx-swift 0.29.1 (#411)
Cloned https://github.com/ml-explore/mlx-swift-examples.git
Revision (git rev-parse @):
9bff95ca5f0b9e8c021acc4d71a2bbe4a7441631
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/ml-explore/mlx-swift-examples.git at 2.29.1
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/ml-explore/mlx-swift-examples.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-53886769-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:wasm-6.4-latest swift build --swift-sdk swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm 2>&1
wasm-6.4-latest: Pulling from saguaro1/spi-images
Digest: sha256:4328fdb43c680d205c1d6761b1e3267aa38277eefdda9ddfb17b6a0f1a77857a
Status: Image is up to date for registry.gitlab.com/saguaro1/spi-images:wasm-6.4-latest
Fetching https://github.com/ml-explore/mlx-swift
Fetching https://github.com/huggingface/swift-transformers
Fetching https://github.com/1024jp/GzipSwift
[1/1762] Fetching gzipswift
[1763/8780] Fetching gzipswift, swift-transformers
Fetched https://github.com/1024jp/GzipSwift (0.73s)
Fetched https://github.com/huggingface/swift-transformers (0.73s)
[1/16941] Fetching mlx-swift
Fetched https://github.com/ml-explore/mlx-swift (1.24s)
Computing version for https://github.com/1024jp/GzipSwift
Computed https://github.com/1024jp/GzipSwift at 6.0.1 (2.28s)
Computing version for https://github.com/huggingface/swift-transformers
Computed https://github.com/huggingface/swift-transformers at 1.0.0 (0.16s)
Fetching https://github.com/huggingface/swift-jinja.git
[1/1360] Fetching swift-jinja
Fetched https://github.com/huggingface/swift-jinja.git (0.60s)
Computing version for https://github.com/ml-explore/mlx-swift
Computed https://github.com/ml-explore/mlx-swift at 0.29.1 (0.82s)
Fetching https://github.com/apple/swift-numerics
[1/6640] Fetching swift-numerics
Fetched https://github.com/apple/swift-numerics (0.57s)
Computing version for https://github.com/apple/swift-numerics
Computed https://github.com/apple/swift-numerics at 1.1.1 (0.74s)
Computing version for https://github.com/huggingface/swift-jinja.git
Computed https://github.com/huggingface/swift-jinja.git at 2.5.1 (0.16s)
Fetching https://github.com/apple/swift-collections.git
[1/27686] Fetching swift-collections
Fetched https://github.com/apple/swift-collections.git (1.28s)
Computing version for https://github.com/apple/swift-collections.git
Computed https://github.com/apple/swift-collections.git at 1.7.0 (1.59s)
Creating working copy for https://github.com/apple/swift-collections.git
Working copy of https://github.com/apple/swift-collections.git resolved at 1.7.0
Creating working copy for https://github.com/apple/swift-numerics
Working copy of https://github.com/apple/swift-numerics resolved at 1.1.1
Creating working copy for https://github.com/huggingface/swift-transformers
Working copy of https://github.com/huggingface/swift-transformers resolved at 1.0.0
Creating working copy for https://github.com/1024jp/GzipSwift
Working copy of https://github.com/1024jp/GzipSwift resolved at 6.0.1
Creating working copy for https://github.com/huggingface/swift-jinja.git
Working copy of https://github.com/huggingface/swift-jinja.git resolved at 2.5.1
Creating working copy for https://github.com/ml-explore/mlx-swift
Working copy of https://github.com/ml-explore/mlx-swift resolved at 0.29.1
Building for debugging...
[Computing dependencies]
[Constructing description]
[Pre-planning 1 / 1007]
[Planning 934 / 1007]
[Planning deferred tasks]
[Starting]
warning: no rule to process file '/host/spi-builder-workspace/.build/checkouts/mlx-swift/Source/Cmlx/mlx-generated/metal/arg_reduce.metal' of type 'sourcecode.metal' for architecture 'wasm32'
warning: no rule to process file '/host/spi-builder-workspace/.build/checkouts/mlx-swift/Source/Cmlx/mlx-generated/metal/conv.metal' of type 'sourcecode.metal' for architecture 'wasm32'
warning: no rule to process file '/host/spi-builder-workspace/.build/checkouts/mlx-swift/Source/Cmlx/mlx-generated/metal/gemv.metal' of type 'sourcecode.metal' for architecture 'wasm32'
warning: no rule to process file '/host/spi-builder-workspace/.build/checkouts/mlx-swift/Source/Cmlx/mlx-generated/metal/layer_norm.metal' of type 'sourcecode.metal' for architecture 'wasm32'
warning: no rule to process file '/host/spi-builder-workspace/.build/checkouts/mlx-swift/Source/Cmlx/mlx-generated/metal/random.metal' of type 'sourcecode.metal' for architecture 'wasm32'
warning: no rule to process file '/host/spi-builder-workspace/.build/checkouts/mlx-swift/Source/Cmlx/mlx-generated/metal/rms_norm.metal' of type 'sourcecode.metal' for architecture 'wasm32'
warning: no rule to process file '/host/spi-builder-workspace/.build/checkouts/mlx-swift/Source/Cmlx/mlx-generated/metal/rope.metal' of type 'sourcecode.metal' for architecture 'wasm32'
warning: no rule to process file '/host/spi-builder-workspace/.build/checkouts/mlx-swift/Source/Cmlx/mlx-generated/metal/scaled_dot_product_attention.metal' of type 'sourcecode.metal' for architecture 'wasm32'
warning: no rule to process file '/host/spi-builder-workspace/.build/checkouts/mlx-swift/Source/Cmlx/mlx-generated/metal/steel/attn/kernels/steel_attention.metal' of type 'sourcecode.metal' for architecture 'wasm32'
[132 / 483] ComplexModule
[160 / 498] InternalCollectionsUtilities
[162 / 506] Cmlx
[169 / 506] Cmlx
In file included from /host/spi-builder-workspace/.build/checkouts/mlx-swift/Source/Cmlx/mlx/mlx/backend/metal/utils.cpp:3:
In file included from /host/spi-builder-workspace/.build/checkouts/mlx-swift/Source/Cmlx/mlx/mlx/backend/metal/utils.h:8:
In file included from /host/spi-builder-workspace/.build/checkouts/mlx-swift/Source/Cmlx/mlx/mlx/backend/metal/device.h:5:
In file included from /host/spi-builder-workspace/.build/checkouts/mlx-swift/Source/Cmlx/metal-cpp/Metal/Metal.hpp:25:
In file included from /host/spi-builder-workspace/.build/checkouts/mlx-swift/Source/Cmlx/metal-cpp/Metal/MTLAccelerationStructure.hpp:24:
In file included from /host/spi-builder-workspace/.build/checkouts/mlx-swift/Source/Cmlx/metal-cpp/Metal/MTLHeaderBridge.hpp:22:
/host/spi-builder-workspace/.build/checkouts/mlx-swift/Source/Cmlx/metal-cpp/Metal/MTLPrivate.hpp:27:10: fatal error: 'objc/runtime.h' file not found
   27 | #include <objc/runtime.h>
      |          ^~~~~~~~~~~~~~~~
1 error generated.
error: CompileC /host/spi-builder-workspace/.build/out/Intermediates.noindex/mlx-swift.build/Debug-webassembly-wasm32/Cmlx-t.build/Objects-normal/wasm32/utils-f4de9c7612a3482112314170721f5769de678168aef9c1aec5249fdff71318ea.o /host/spi-builder-workspace/.build/checkouts/mlx-swift/Source/Cmlx/mlx/mlx/backend/metal/utils.cpp normal wasm32 c++ com.apple.compilers.llvm.clang.1_0.compiler failed with a nonzero exit code. Command line:     cd /host

    Using response file: /host/spi-builder-workspace/.build/out/Intermediates.noindex/mlx-swift.build/Debug-webassembly-wasm32/Cmlx-t.build/Objects-normal/wasm32/11b881b950eb02e21769317df93e9b41d1d7f0348e4e0901ae810dce93ca1a57-common-args.resp

    /usr/bin/clang -x c++ -target wasm32-unknown-wasip1 -fmessage-length\=0 -fdiagnostics-show-note-include-stack -fmacro-backtrace-limit\=0 -fcolor-diagnostics -Wno-trigraphs -Wno-missing-field-initializers -Wno-missing-prototypes -Wno-return-type -Wno-non-virtual-dtor -Wno-overloaded-virtual -Wno-exit-time-destructors -Wno-missing-braces -Wparentheses -Wswitch -Wno-unused-function -Wno-unused-label -Wno-unused-parameter -Wno-unused-variable -Wunused-value -Wno-empty-body -Wno-uninitialized -Wno-unknown-pragmas -w -Wno-shadow -Wno-four-char-constants -Wno-conversion -Wno-constant-conversion -Wno-int-conversion -Wno-bool-conversion -Wno-enum-conversion -Wno-float-conversion -Wno-non-literal-null-conversion -Wno-objc-literal-conversion -Wno-shorten-64-to-32 -Wno-newline-eof -Wno-c++11-extensions -Wno-implicit-fallthrough -fstrict-aliasing -Wdeprecated-declarations -Winvalid-offsetof -Wno-sign-conversion -Wno-infinite-recursion -Wno-move -Wno-comma -Wno-block-capture-autoreleasing -Wno-strict-prototypes -Wno-range-loop-analysis -Wno-semicolon-before-method-body --sysroot /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/WASI.sdk @/host/spi-builder-workspace/.build/out/Intermediates.noindex/mlx-swift.build/Debug-webassembly-wasm32/Cmlx-t.build/Objects-normal/wasm32/11b881b950eb02e21769317df93e9b41d1d7f0348e4e0901ae810dce93ca1a57-common-args.resp -MMD -MT dependencies -MF /host/spi-builder-workspace/.build/out/Intermediates.noindex/mlx-swift.build/Debug-webassembly-wasm32/Cmlx-t.build/Objects-normal/wasm32/utils-f4de9c7612a3482112314170721f5769de678168aef9c1aec5249fdff71318ea.d --serialize-diagnostics /host/spi-builder-workspace/.build/out/Intermediates.noindex/mlx-swift.build/Debug-webassembly-wasm32/Cmlx-t.build/Objects-normal/wasm32/utils-f4de9c7612a3482112314170721f5769de678168aef9c1aec5249fdff71318ea.dia -c /host/spi-builder-workspace/.build/checkouts/mlx-swift/Source/Cmlx/mlx/mlx/backend/metal/utils.cpp -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/mlx-swift.build/Debug-webassembly-wasm32/Cmlx-t.build/Objects-normal/wasm32/utils-f4de9c7612a3482112314170721f5769de678168aef9c1aec5249fdff71318ea.o
error: Build failed
BUILD FAILURE 6.4 wasm