mlx-swift – Build Information – Swift Package Index

Build Information

Failed to build mlx-swift, reference main (5f117a), with Swift 6.4 for Linux on 1 Nov 2026 15:37:41 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-53886769-2":/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:linux-6.4-latest swift build --triple x86_64-unknown-linux-gnu 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 5.1.4
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/ml-explore/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/ml-explore/mlx-swift
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 5f117a2 fix callers of mlx_vector_array_values to handle potentially empty results (#518)
Submodule path 'Source/Cmlx/mlx': checked out '36969c094354086e15d2a327a9c50feb20b9cf11'
Submodule path 'Source/Cmlx/mlx-c': checked out 'a26f2d584a14ec619ae8db9a09be03becd47598a'
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/ml-explore/mlx-swift.git
Revision (git rev-parse @):
5f117a2e7ee1ce92f8dcc1520bc07535c43846f9
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/ml-explore/mlx-swift.git at main
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.4
Building package at path:  $PWD
https://github.com/ml-explore/mlx-swift.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-53886769-2":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:linux-6.4-latest swift build --triple x86_64-unknown-linux-gnu 2>&1
linux-6.4-latest: Pulling from saguaro1/spi-images
Digest: sha256:ad3afec1d6cff9a88dbd06b5b923cd7d46d6f55cc44d4c49fe48cde94ee812a7
Status: Image is up to date for registry.gitlab.com/saguaro1/spi-images:linux-6.4-latest
Fetching https://github.com/apple/swift-numerics
Fetching https://github.com/apple/swift-argument-parser
[1/6766] Fetching swift-numerics
[6632/26096] Fetching swift-numerics, swift-argument-parser
Fetched https://github.com/apple/swift-numerics (0.60s)
[9665/19330] Fetching swift-argument-parser
Fetched https://github.com/apple/swift-argument-parser (0.83s)
Computing version for https://github.com/apple/swift-numerics
Computed https://github.com/apple/swift-numerics at 1.1.1 (0.98s)
Computing version for https://github.com/apple/swift-argument-parser
Computed https://github.com/apple/swift-argument-parser at 1.8.2 (0.15s)
Creating working copy for https://github.com/apple/swift-argument-parser
Working copy of https://github.com/apple/swift-argument-parser resolved at 1.8.2
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': Invalid Exclude '/host/spi-builder-workspace/Source/Cmlx/mlx/build': File not found.
warning: 'spi-builder-workspace': Invalid Exclude '/host/spi-builder-workspace/Source/Cmlx/mlx/CODE_OF_CONDUCT.md': File not found.
warning: 'spi-builder-workspace': Invalid Exclude '/host/spi-builder-workspace/Source/Cmlx/mxl/mlx/backend/metal/cross_entropy.cpp': File not found.
warning: 'spi-builder-workspace': Invalid Exclude '/host/spi-builder-workspace/Source/Cmlx/mlx/CODE_OF_CONDUCT.md': File not found.
warning: 'spi-builder-workspace': Invalid Exclude '/host/spi-builder-workspace/Source/Cmlx/mxl/mlx/backend/metal/cross_entropy.cpp': File not found.
warning: 'spi-builder-workspace': Invalid Exclude '/host/spi-builder-workspace/Source/Cmlx/mlx/build': File not found.
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 / 852]
[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 'x86_64'
warning: no rule to process file '/host/spi-builder-workspace/Source/Cmlx/mlx-generated/metal/conv.metal' of type 'sourcecode.metal' for architecture 'x86_64'
warning: no rule to process file '/host/spi-builder-workspace/Source/Cmlx/mlx-generated/metal/dot.metal' of type 'sourcecode.metal' for architecture 'x86_64'
warning: no rule to process file '/host/spi-builder-workspace/Source/Cmlx/mlx-generated/metal/gated_delta_update.metal' of type 'sourcecode.metal' for architecture 'x86_64'
warning: no rule to process file '/host/spi-builder-workspace/Source/Cmlx/mlx-generated/metal/gated_delta_update_vjp.metal' of type 'sourcecode.metal' for architecture 'x86_64'
warning: no rule to process file '/host/spi-builder-workspace/Source/Cmlx/mlx-generated/metal/gather_mm_offsets.metal' of type 'sourcecode.metal' for architecture 'x86_64'
warning: no rule to process file '/host/spi-builder-workspace/Source/Cmlx/mlx-generated/metal/layer_norm.metal' of type 'sourcecode.metal' for architecture 'x86_64'
warning: no rule to process file '/host/spi-builder-workspace/Source/Cmlx/mlx-generated/metal/random.metal' of type 'sourcecode.metal' for architecture 'x86_64'
warning: no rule to process file '/host/spi-builder-workspace/Source/Cmlx/mlx-generated/metal/rms_norm.metal' of type 'sourcecode.metal' for architecture 'x86_64'
warning: no rule to process file '/host/spi-builder-workspace/Source/Cmlx/mlx-generated/metal/rope.metal' of type 'sourcecode.metal' for architecture 'x86_64'
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 'x86_64'
warning: no rule to process file '/host/spi-builder-workspace/Source/Cmlx/mlx-generated/metal/scaled_dot_product_attention_vjp.metal' of type 'sourcecode.metal' for architecture 'x86_64'
warning: no rule to process file '/host/spi-builder-workspace/Source/Cmlx/mlx-generated/metal/searchsorted.metal' of type 'sourcecode.metal' for architecture 'x86_64'
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 'x86_64'
[53 / 625] MLXNN
[132 / 638] _NumericsShims
[135 / 638] ArgumentParserToolInfo
[145 / 638] RealModule
[153 / 648] ComplexModule
[155 / 648] ComplexModule
[177 / 664] RealModule
[187 / 665] ArgumentParserToolInfo
[196 / 672] encuda-product
[197 / 672] encuda-product
[199 / 672] encuda-product
[201 / 672]
[203 / 672] encuda-product
[206 / 674] ArgumentParser
[210 / 674] encuda-product
[222 / 684] MLX
[222 / 684] Cmlx
[223 / 684] Cmlx
In file included from /host/spi-builder-workspace/Source/Cmlx/mlx/mlx/backend/cuda/worker.cpp:3:
In file included from /host/spi-builder-workspace/Source/Cmlx/mlx/mlx/backend/cuda/worker.h:5:
In file included from /host/spi-builder-workspace/Source/Cmlx/mlx/mlx/backend/cuda/event.h:6:
In file included from /host/spi-builder-workspace/Source/Cmlx/mlx/mlx/backend/cuda/utils.h:8:
In file included from /host/spi-builder-workspace/Source/Cmlx/mlx/mlx/backend/cuda/allocator.h:7:
[1m/host/spi-builder-workspace/Source/Cmlx/mlx/mlx/backend/cuda/cuda_utils.h:5:10: [0m[0;1;31merror: [0m[1m'cuda.h' file not found with <angled> include; use "quotes" instead[0m
    5 | #include <cuda.h>[0m
      | [0;1;32m         ^~~~~~~~
[0m      | [0;32m         "cuda.h"
[0m[1m/host/spi-builder-workspace/Source/Cmlx/mlx/mlx/backend/cuda/cuda_utils.h:6:10: [0m[0;1;31mfatal error: [0m[1m'cuda_runtime.h' file not found[0m
    6 | #include <cuda_runtime.h>[0m
      | [0;1;32m         ^~~~~~~~~~~~~~~~
[0m2 errors generated.
error: CompileC /host/spi-builder-workspace/.build/out/Intermediates.noindex/mlx-swift.build/Debug-linux-x86_64/Cmlx-t.build/Objects-normal/x86_64/worker.o /host/spi-builder-workspace/Source/Cmlx/mlx/mlx/backend/cuda/worker.cpp normal x86_64 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-linux-x86_64/Cmlx-t.build/Objects-normal/x86_64/11b881b950eb02e21769317df93e9b41d1d7f0348e4e0901ae810dce93ca1a57-common-args.resp

    /usr/bin/clang -x c++ -target x86_64-unknown-linux-gnu -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 / -Wno-shorten-64-to-32 @/host/spi-builder-workspace/.build/out/Intermediates.noindex/mlx-swift.build/Debug-linux-x86_64/Cmlx-t.build/Objects-normal/x86_64/11b881b950eb02e21769317df93e9b41d1d7f0348e4e0901ae810dce93ca1a57-common-args.resp -MMD -MT dependencies -MF /host/spi-builder-workspace/.build/out/Intermediates.noindex/mlx-swift.build/Debug-linux-x86_64/Cmlx-t.build/Objects-normal/x86_64/worker.d --serialize-diagnostics /host/spi-builder-workspace/.build/out/Intermediates.noindex/mlx-swift.build/Debug-linux-x86_64/Cmlx-t.build/Objects-normal/x86_64/worker.dia -c /host/spi-builder-workspace/Source/Cmlx/mlx/mlx/backend/cuda/worker.cpp -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/mlx-swift.build/Debug-linux-x86_64/Cmlx-t.build/Objects-normal/x86_64/worker.o
error: Build failed
BUILD FAILURE 6.4 linux