nixos-config/packages/gamemode/default.nix

{ stdenv, lib,
  meson, ninja, dbus, systemd, pkgconfig, cmake, inih,
  fetchFromGitHub, fetchpatch }:

stdenv.mkDerivation rec {
  pname = "gamemode";
  version = "1.6.1";

  src = fetchFromGitHub {
    owner = "FeralInteractive";
    repo = pname;
    rev = version;
    sha256 = "17dck7dzkmzq52f2yrs930fdg2inr7nipvnwpd0jqrwgk2fhwk9z";
  };

  patches = [
    (fetchpatch {
      url = "https://github.com/FeralInteractive/gamemode/commit/be44b7091baa33be6dda60392e4c06c2f398ee72.patch";
      sha256 = "TlDUETs4+N3pvrVd0FQGlGmC+6ByhJ2E7gKXa7suBtE=";
    })
    ./preload-nix-workaround.patch
  ];
  
  nativeBuildInputs = [
    meson ninja pkgconfig cmake
  ];

  buildInputs = [
    dbus systemd inih
  ];

  mesonFlags = [
    "-Dwith-systemd-user-unit-dir=${placeholder "out"}/lib/systemd/user"
  ];

  postPatch = ''
    substituteInPlace data/gamemoderun \
      --subst-var-by libraryPath ${lib.makeLibraryPath ([
        (placeholder "lib")
      ])}
  '';
  
  meta = with lib; {
    description = "Optimise Linux system performance on demand";
    homepage = "https://github.com/FeralInteractive/gamemode";
    license = licenses.bsd3;
    maintainers = [ ];
    platforms = platforms.linux;
  };
}