mlx-swift – Build Information – Swift Package Index

Build Information

Failed to build mlx-swift, reference main (61b9e0), with Swift 6.4 for Wasm on 25 Sep 2026 16:11:21 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-54344845-0":/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/DePasqualeOrg/mlx-swift.git
Reference: main
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/DePasqualeOrg/mlx-swift
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 61b9e01 hold evalLock during mlx_save_safetensors etc (#379)
Submodule path 'Source/Cmlx/mlx': checked out 'ce45c52505c8158ea48d2a54e8caae05efd86bfe'
Submodule path 'Source/Cmlx/mlx-c': checked out '0726ca922fc902c4c61ef9c27d94132be418e945'
Submodule 'submodules/mlx' (https://github.com/ml-explore/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 '/host/spi-builder-workspace/Source/Cmlx/mlx'...
Cloning into '/host/spi-builder-workspace/Source/Cmlx/mlx-c'...
Cloned https://github.com/DePasqualeOrg/mlx-swift.git
Revision (git rev-parse @):
61b9e011e09a62b489f6bd647958f1555bdf2896
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/DePasqualeOrg/mlx-swift.git at main
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/DePasqualeOrg/mlx-swift.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344845-0":/host -w "$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/apple/swift-numerics
[1/6640] Fetching swift-numerics
Fetched https://github.com/apple/swift-numerics (0.62s)
Computing version for https://github.com/apple/swift-numerics
Computed https://github.com/apple/swift-numerics at 1.1.1 (0.79s)
Creating working copy for https://github.com/apple/swift-numerics
Working copy of https://github.com/apple/swift-numerics resolved at 1.1.1
warning: 'spi-builder-workspace': found 3 file(s) which are unhandled; explicitly declare them as resources or exclude from the target
    /host/spi-builder-workspace/Source/Examples/CustomFunctionExample.swift
    /host/spi-builder-workspace/Source/Examples/CustomFunctionExampleSimple.swift
    /host/spi-builder-workspace/Source/Examples/Example1.swift
warning: 'spi-builder-workspace': found 3 file(s) which are unhandled; explicitly declare them as resources or exclude from the target
    /host/spi-builder-workspace/Source/Examples/CustomFunctionExample.swift
    /host/spi-builder-workspace/Source/Examples/CustomFunctionExampleSimple.swift
    /host/spi-builder-workspace/Source/Examples/Tutorial.swift
warning: 'spi-builder-workspace': found 3 file(s) which are unhandled; explicitly declare them as resources or exclude from the target
    /host/spi-builder-workspace/Source/Examples/CustomFunctionExample.swift
    /host/spi-builder-workspace/Source/Examples/Example1.swift
    /host/spi-builder-workspace/Source/Examples/Tutorial.swift
warning: 'spi-builder-workspace': found 3 file(s) which are unhandled; explicitly declare them as resources or exclude from the target
    /host/spi-builder-workspace/Source/Examples/CustomFunctionExampleSimple.swift
    /host/spi-builder-workspace/Source/Examples/Example1.swift
    /host/spi-builder-workspace/Source/Examples/Tutorial.swift
Building for debugging...
[Computing dependencies]
[Constructing description]
[Pre-planning 1 / 707]
[Planning deferred tasks]
[Starting]
warning: no rule to process file '/host/spi-builder-workspace/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/Source/Cmlx/mlx-generated/metal/conv.metal' of type 'sourcecode.metal' for architecture 'wasm32'
warning: no rule to process file '/host/spi-builder-workspace/Source/Cmlx/mlx-generated/metal/gemv.metal' of type 'sourcecode.metal' for architecture 'wasm32'
warning: no rule to process file '/host/spi-builder-workspace/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/Source/Cmlx/mlx-generated/metal/random.metal' of type 'sourcecode.metal' for architecture 'wasm32'
warning: no rule to process file '/host/spi-builder-workspace/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/Source/Cmlx/mlx-generated/metal/rope.metal' of type 'sourcecode.metal' for architecture 'wasm32'
warning: no rule to process file '/host/spi-builder-workspace/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/Source/Cmlx/mlx-generated/metal/steel/attn/kernels/steel_attention.metal' of type 'sourcecode.metal' for architecture 'wasm32'
[26 / 330] MLXRandom-product
[98 / 331] Cmlx
[105 / 340] Cmlx
[1m/host/spi-builder-workspace/Source/Cmlx/mlx/mlx/distributed/utils.cpp:3:10: [0m[0;1;31mfatal error: [0m[1m'netdb.h' file not found[0m
    3 | #include <netdb.h>[0m
      | [0;1;32m         ^~~~~~~~~
[0m1 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-e1dec914225c7dbd7ea4a1234b961f674816109a30e406e6bc6bbcf4f63e0ced.o /host/spi-builder-workspace/Source/Cmlx/mlx/mlx/distributed/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 -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-e1dec914225c7dbd7ea4a1234b961f674816109a30e406e6bc6bbcf4f63e0ced.d --serialize-diagnostics /host/spi-builder-workspace/.build/out/Intermediates.noindex/mlx-swift.build/Debug-webassembly-wasm32/Cmlx-t.build/Objects-normal/wasm32/utils-e1dec914225c7dbd7ea4a1234b961f674816109a30e406e6bc6bbcf4f63e0ced.dia -c /host/spi-builder-workspace/Source/Cmlx/mlx/mlx/distributed/utils.cpp -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/mlx-swift.build/Debug-webassembly-wasm32/Cmlx-t.build/Objects-normal/wasm32/utils-e1dec914225c7dbd7ea4a1234b961f674816109a30e406e6bc6bbcf4f63e0ced.o
[106 / 340] RealModule
error: Build failed
BUILD FAILURE 6.4 wasm