hosts/local/master/rtl8188gu.nix


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{
  stdenv,
  lib,
  fetchFromGitHub,
  kernel,
  bc,
}: let
  modDestDir = "$out/lib/modules/${kernel.modDirVersion}/kernel/drivers/net/wireless/realtek/rtl8188gu";
in
  stdenv.mkDerivation rec {
    name = "r8188gu-${kernel.version}-${version}";
    # on update please verify that the source matches the realtek version
    version = "1.0";

    src = fetchFromGitHub {
      owner = "McMCCRU";
      repo = "rtl8188gu";
      rev = "bb3292dbb72ba6675b5465245eee0e69912f6e76";
      hash = "sha256-ixu8v3ikTdqlNBEp6YrvuoDWKyi0RxjySXr+fTuO77Q=";
    };

    hardeningDisable = ["pic"];

    nativeBuildInputs = kernel.moduleBuildDependencies ++ [bc];

    preBuild =
      ''
        makeFlagsArray+=("KVER=${kernel.modDirVersion}")
        makeFlagsArray+=("KSRC=${kernel.dev}/lib/modules/${kernel.modDirVersion}/build")
        makeFlagsArray+=("modules")

        # try to make it work for v5.8 - but update_mgmt_frame_registrations is too different
        #find -type f -exec sed -i 's/sha256_/rtl_sha256_/g ; s/timespec/timespec64/ ; s/getboottime/getboottime64/ ; s/mgmt_frame_register/update_mgmt_frame_registrations/g' {} \+
        find -type f -exec sed -i 's/timespec/timespec64/ ; s/getboottime/getboottime64/ ; s/entry = proc_create_data.*/entry = NULL;/' {} \+
      ''
      + lib.optionalString stdenv.hostPlatform.isAarch64 ''
        makeFlagsArray+=("ARCH=arm64")
      '';

    enableParallelBuilding = true;

    installPhase = ''
      mkdir -p ${modDestDir}
      find . -name '*.ko' -exec cp --parents '{}' ${modDestDir} \;
      find ${modDestDir} -name '*.ko' -exec xz -f '{}' \;
    '';

    meta = with lib; {
      description = "Realtek RTL8188GU driver";
      longDescription = ''
        A kernel module for Realtek 8188 network cards.
      '';
      license = licenses.gpl2Plus;
      platforms = platforms.linux;
    };
  }