Luke Granger-Brown
57725ef3ec
git-subtree-dir: third_party/nixpkgs git-subtree-split: 76612b17c0ce71689921ca12d9ffdc9c23ce40b2
112 lines
3.5 KiB
Nix
112 lines
3.5 KiB
Nix
{ callPackage
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, stdenv
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, fetchzip
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, lib
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, libcxx
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, llvmPackages
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, config
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, addDriverRunpath
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, patchelf
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, fixDarwinDylibNames
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, cudaSupport ? config.cudaSupport
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}:
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let
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# The binary libtorch distribution statically links the CUDA
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# toolkit. This means that we do not need to provide CUDA to
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# this derivation. However, we should ensure on version bumps
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# that the CUDA toolkit for `passthru.tests` is still
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# up-to-date.
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version = "2.5.0";
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device = if cudaSupport then "cuda" else "cpu";
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srcs = import ./binary-hashes.nix version;
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unavailable = throw "libtorch is not available for this platform";
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libcxx-for-libtorch = if stdenv.hostPlatform.isDarwin then libcxx else (lib.getLib stdenv.cc.cc);
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in stdenv.mkDerivation {
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inherit version;
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pname = "libtorch";
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src = fetchzip srcs."${stdenv.hostPlatform.system}-${device}" or unavailable;
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nativeBuildInputs =
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if stdenv.hostPlatform.isDarwin then [ fixDarwinDylibNames ]
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else [ patchelf ] ++ lib.optionals cudaSupport [ addDriverRunpath ];
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dontBuild = true;
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dontConfigure = true;
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dontStrip = true;
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installPhase = ''
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# Copy headers and CMake files.
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mkdir -p $dev
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cp -r include $dev
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cp -r share $dev
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install -Dm755 -t $out/lib lib/*${stdenv.hostPlatform.extensions.sharedLibrary}*
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# We do not care about Java support...
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rm -f $out/lib/lib*jni* 2> /dev/null || true
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# Fix up library paths for split outputs
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substituteInPlace $dev/share/cmake/Torch/TorchConfig.cmake \
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--replace \''${TORCH_INSTALL_PREFIX}/lib "$out/lib" \
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substituteInPlace \
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$dev/share/cmake/Caffe2/Caffe2Targets-release.cmake \
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--replace \''${_IMPORT_PREFIX}/lib "$out/lib" \
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'';
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postFixup = let
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rpath = lib.makeLibraryPath [ stdenv.cc.cc ];
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in lib.optionalString stdenv.hostPlatform.isLinux ''
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find $out/lib -type f \( -name '*.so' -or -name '*.so.*' \) | while read lib; do
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echo "setting rpath for $lib..."
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patchelf --set-rpath "${rpath}:$out/lib" "$lib"
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${lib.optionalString cudaSupport ''
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addDriverRunpath "$lib"
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''}
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done
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'' + lib.optionalString stdenv.hostPlatform.isDarwin ''
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for f in $out/lib/*.dylib; do
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otool -L $f
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done
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for f in $out/lib/*.dylib; do
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if otool -L $f | grep "@rpath/libomp.dylib" >& /dev/null; then
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install_name_tool -change "@rpath/libomp.dylib" ${llvmPackages.openmp}/lib/libomp.dylib $f
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fi
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install_name_tool -id $out/lib/$(basename $f) $f || true
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for rpath in $(otool -L $f | grep rpath | awk '{print $1}');do
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install_name_tool -change $rpath $out/lib/$(basename $rpath) $f
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done
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if otool -L $f | grep /usr/lib/libc++ >& /dev/null; then
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install_name_tool -change /usr/lib/libc++.1.dylib ${libcxx-for-libtorch.outPath}/lib/libc++.1.0.dylib $f
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fi
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done
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for f in $out/lib/*.dylib; do
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otool -L $f
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done
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'';
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outputs = [ "out" "dev" ];
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passthru.tests.cmake = callPackage ./test {
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inherit cudaSupport;
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};
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meta = with lib; {
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description = "C++ API of the PyTorch machine learning framework";
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homepage = "https://pytorch.org/";
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sourceProvenance = with sourceTypes; [ binaryNativeCode ];
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# Includes CUDA and Intel MKL, but redistributions of the binary are not limited.
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# https://docs.nvidia.com/cuda/eula/index.html
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# https://www.intel.com/content/www/us/en/developer/articles/license/onemkl-license-faq.html
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license = licenses.bsd3;
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maintainers = with maintainers; [ junjihashimoto ];
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platforms = [
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"aarch64-darwin"
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"x86_64-linux"
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];
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};
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}
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