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{ lib, stdenv
, fetchFromGitHub
, bison
, cmake
, jq
, python3
, spirv-headers
, spirv-tools
, argSpirv-tools ? null
, argSpirv-headers ? null
}:
# glslang requires custom versions of spirv-tools and spirb-headers.
# The exact versions are taken from:
# https://github.com/KhronosGroup/glslang/blob/${version}/known_good.json
let
localSpirv-tools = if argSpirv-tools == null
then spirv-tools.overrideAttrs (_: {
src = fetchFromGitHub {
owner = "KhronosGroup";
repo = "SPIRV-Tools";
rev = "b27b1afd12d05bf238ac7368bb49de73cd620a8e";
sha256 = "0v26ws6qx23jn4dcpsq6rqmdxgyxpl5pcvfm90wb3nz6iqbqx294";
};
})
else argSpirv-tools;
localSpirv-headers = if argSpirv-headers == null
then spirv-headers.overrideAttrs (_: {
src = fetchFromGitHub {
owner = "KhronosGroup";
repo = "SPIRV-Headers";
rev = "f027d53ded7e230e008d37c8b47ede7cd308e19d";
sha256 = "12gp2mqcar6jj57jw9isfr62yn72kmvdcl0zga4gvrlyfhnf582q";
};
})
else argSpirv-headers;
in
stdenv.mkDerivation rec {
pname = "glslang";
version = "11.1.0";
src = fetchFromGitHub {
owner = "KhronosGroup";
repo = "glslang";
rev = version;
sha256 = "1j81pghy7whyr8ygk7lx6g6qph61rky7fkkc8xp87c7n695a48rw";
};
# These get set at all-packages, keep onto them for child drvs
passthru = {
spirv-tools = localSpirv-tools;
spirv-headers = localSpirv-headers;
};
nativeBuildInputs = [ cmake python3 bison jq ];
postPatch = ''
cp --no-preserve=mode -r "${localSpirv-tools.src}" External/spirv-tools
ln -s "${localSpirv-headers.src}" External/spirv-tools/external/spirv-headers
'';
# Ensure spirv-headers and spirv-tools match exactly to what is expected
preConfigure = ''
HEADERS_COMMIT=$(jq -r < known_good.json '.commits|map(select(.name=="spirv-tools/external/spirv-headers"))[0].commit')
TOOLS_COMMIT=$(jq -r < known_good.json '.commits|map(select(.name=="spirv-tools"))[0].commit')
if [ "$HEADERS_COMMIT" != "${localSpirv-headers.src.rev}" ] || [ "$TOOLS_COMMIT" != "${localSpirv-tools.src.rev}" ]; then
echo "ERROR: spirv-tools commits do not match expected versions: expected tools at $TOOLS_COMMIT, headers at $HEADERS_COMMIT";
exit 1;
fi
'';
meta = with lib; {
inherit (src.meta) homepage;
description = "Khronos reference front-end for GLSL and ESSL";
license = licenses.asl20;
platforms = platforms.unix;
maintainers = [ maintainers.ralith ];
};
}
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