{ lib, stdenv, fetchFromGitHub
, cmake, ninja, pkg-config
, glm
, openexr, withOpenEXR ? false
, debug ? false
}:
assert lib.assertMsg (withOpenEXR == false)
  "openexr has busted pkg-config files for now; sorry!";
stdenv.mkDerivation rec {
  pname = "compressonator-sdk";
  version = "4.5.52";

  src = fetchFromGitHub {
    owner = "GPUOpen-Tools";
    repo = "compressonator";
    rev = "V${version}";
    hash = "sha256-Vehzdlx39LX3p3z+U1y/ZbKyyPNuye21+RHCY2BbNHg=";
  };

  nativeBuildInputs = [ cmake pkg-config ninja ];
  buildInputs = [ glm ] ++ lib.optional withOpenEXR [ openexr ];

  cmakeFlags = with lib; [
    "-GNinja"
    (cmakeBool "OPTION_ENABLE_ALL_APPS" false)
    (cmakeBool "OPTION_BUILD_CMP_SDK" true)
    (cmakeBool "OPTION_BUILD_KTX2" false)
    (cmakeBool "OPTION_BUILD_EXR" withOpenEXR)
  ];
  cmakeBuildType = if debug then "Debug" else "Release";

  postPatch = ''
    # the call sites for this are guarded behind ifdef OPTION_CMP_OPENCV but
    # for some reason the thing itself isn't, and still gets built (???)
    rm applications/_plugins/common/ssim*
    sed -i '/ssim/d' applications/_plugins/common/CMakeLists.txt
  '' + lib.optionalString (!stdenv.hostPlatform.isx86) ''
    # still plenty fast for our purposes
    sed -i '/Core SIMD/,/target_link_libraries/d' \
      {build/sdk/,}cmp_core/CMakeLists.txt
    sed -i '/CGU_BOOL useAVX512/,/return result;/d' \
      cmp_core/shaders/bc1_cmp.h
  '';

  installPhase = ''
    mkdir -p $out/include
    mv lib $out/
    mv ../cmp_compressonatorlib/compressonator.h $out/include/
  '';

  meta = {
    homepage = src.url;
    description = "Tool suite for Texture and 3D Model Compression, Optimization and Analysis using CPUs, GPUs and APUs";
    license = with lib.licenses; [ mit asl20 ];
    platforms = lib.platforms.unix;
  };
}