{ lib, stdenv, python3, fetchFromGitHub, makeWrapper, schedtool, sysctl, util-linux, fetchpatch }:

stdenv.mkDerivation rec {
  pname = "ananicy";
  version = "unstable-2023-03-21";

  src = fetchFromGitHub {
    owner = "nefelim4ag";
    repo = "ananicy";
    rev = "1e2cc9a62ba3b6793e59da66aa0039f89e1ad49f";
    sha256 = "sha256-nHp47eYI36edka+cBMzayPHEflAzpgLx0VehhsyYpwI=";
  };

  patches = [
    # https://github.com/Nefelim4ag/Ananicy/pull/437
    # fix makefile destinations
    (fetchpatch {
      url = "https://github.com/Nefelim4ag/Ananicy/commit/dbda0f50670de3f249991706ef1cc107c5197a2f.patch";
      sha256 = "sha256-vMcJxekg2QUbm253CLAv3tmo5kedSlw+/PI/LamNWwc=";
      # only used for debian packaging. lets exclude it so the patch applies even when that file is changed
      excludes = [ "package.sh" ];
    })
  ];

  nativeBuildInputs = [ makeWrapper ];
  buildInputs = [ python3 ];

  makeFlags = [
    "PREFIX=$(out)"
    "SYSCONFDIR=${placeholder "out"}/etc"
  ];

  dontConfigure = true;
  dontBuild = true;

  postInstall = ''
    wrapProgram $out/bin/ananicy \
      --prefix PATH : ${lib.makeBinPath [ schedtool util-linux ]}

    substituteInPlace $out/lib/systemd/system/ananicy.service \
      --replace "/sbin/sysctl" "${sysctl}/bin/sysctl" \
      --replace "/usr/bin/ananicy" "$out/bin/ananicy"
  '';

  meta = with lib; {
    homepage = "https://github.com/Nefelim4ag/Ananicy";
    description = "Another auto nice daemon, with community rules support";
    license = licenses.gpl3Only;
    platforms = platforms.linux;
    maintainers = with maintainers; [ artturin ];
    mainProgram = "ananicy";
  };
}