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{ stdenv, lib, fetchzip, kernel }:
/* The python script shouldn't be needed for users of this kernel module.
https://github.com/rr-debugger/rr/blob/master/scripts/zen_workaround.py
The module itself is called "zen_workaround" (a bit generic unfortunately).
*/
stdenv.mkDerivation rec {
pname = "rr-zen_workaround";
version = "2023-11-23";
src = fetchzip {
url = "https://gist.github.com/glandium/01d54cefdb70561b5f6675e08f2990f2/archive/f9d2070a7d87388da39acd157e0e53666a7d6ee0.zip";
sha256 = "sha256-VqqKYjd8J7Uh5ea+PjLT93cNdQFvGIwGu4bzx+weSvo=";
};
hardeningDisable = [ "pic" ];
nativeBuildInputs = kernel.moduleBuildDependencies;
makeFlags = [
"-C${kernel.dev}/lib/modules/${kernel.modDirVersion}/build"
];
postConfigure = ''
makeFlags="$makeFlags M=$(pwd)"
'';
buildFlags = [ "modules" ];
installPhase = let
modDestDir = "$out/lib/modules/${kernel.modDirVersion}/kernel"; #TODO: longer path?
in ''
runHook preInstall
mkdir -p "${modDestDir}"
cp *.ko "${modDestDir}/"
find ${modDestDir} -name '*.ko' -exec xz -f '{}' \;
runHook postInstall
'';
meta = with lib; {
description = "Kernel module supporting the rr debugger on (some) AMD Zen-based CPUs";
homepage = "https://github.com/rr-debugger/rr/wiki/Zen#kernel-module";
license = licenses.gpl2;
maintainers = [ maintainers.vcunat ];
platforms = [ "x86_64-linux" ];
broken = versionOlder kernel.version "4.19"; # 4.14 breaks and 4.19 works
};
}
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