nixpkgs/pkgs/development/compilers/shaderc/default.nix

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{ lib, stdenv, fetchFromGitHub, cmake, python3 }:
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# Like many google projects, shaderc doesn't gracefully support separately compiled dependencies, so we can't easily use
# the versions of glslang and spirv-tools used by vulkan-loader. Exact revisions are taken from
# https://github.com/google/shaderc/blob/known-good/known_good.json
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# Future work: extract and fetch all revisions automatically based on a revision of shaderc's known-good branch.
let
glslang = fetchFromGitHub {
owner = "KhronosGroup";
repo = "glslang";
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rev = "18eef33bd7a4bf5ad8c69f99cb72022608cf6e73";
sha256 = "sha256-tkWVvYmSpJPaZ8VJOkAWndDWhA0PiHAkR3feBAo+knM=";
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};
spirv-tools = fetchFromGitHub {
owner = "KhronosGroup";
repo = "SPIRV-Tools";
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rev = "c2d5375fa7cc87c93f692e7200d5d974283d4391";
sha256 = "sha256-tMJRljrlH+qb+27rTn+3LuEyMOVpiU0zSCiGNfUTb6g=";
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};
spirv-headers = fetchFromGitHub {
owner = "KhronosGroup";
repo = "SPIRV-Headers";
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rev = "0c28b6451d77774912e52949c1e57fa726edf113";
sha256 = "sha256-KpCMceTV/BRaoJe1qeXhKYQNQqdGaM6Q9nklpJKzHFY=";
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};
in stdenv.mkDerivation rec {
pname = "shaderc";
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version = "2021.0";
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outputs = [ "out" "lib" "bin" "dev" "static" ];
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src = fetchFromGitHub {
owner = "google";
repo = "shaderc";
rev = "v${version}";
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sha256 = "sha256-RfSMzrGVtdXbr/mjSrHoN447e3vMQfJbesQMvLOARBs=";
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};
patchPhase = ''
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cp -r --no-preserve=mode ${glslang} third_party/glslang
cp -r --no-preserve=mode ${spirv-tools} third_party/spirv-tools
ln -s ${spirv-headers} third_party/spirv-tools/external/spirv-headers
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'';
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nativeBuildInputs = [ cmake python3 ];
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postInstall = ''
moveToOutput "lib/*.a" $static
'';
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cmakeFlags = [ "-DSHADERC_SKIP_TESTS=ON" ];
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meta = with lib; {
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inherit (src.meta) homepage;
description = "A collection of tools, libraries and tests for shader compilation";
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license = [ licenses.asl20 ];
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};
}