{
  lib,
  stdenv,
  fetchFromGitLab,
  python3,
  pkg-config,
  xmlto,
  docbook2x,
  docbook_xsl,
  docbook_xml_dtd_412,
}:

stdenv.mkDerivation {
  pname = "irker";
  version = "2017-02-12";

  src = fetchFromGitLab {
    owner = "esr";
    repo = "irker";
    rev = "dc0f65a7846a3922338e72d8c6140053fe914b54";
    sha256 = "1hslwqa0gqsnl3l6hd5hxpn0wlachxd51infifhlwhyhd6iwgx8p";
  };

  nativeBuildInputs = [
    pkg-config
    xmlto
    docbook2x
    docbook_xsl
    docbook_xml_dtd_412
  ];

  buildInputs = [
    python3
    # Needed for proxy support I believe, which I haven't tested.
    # Probably needs to be propagated and some wrapPython magic
    # python.pkgs.pysocks
  ];

  strictDeps = true;

  postPatch = ''
    substituteInPlace Makefile \
      --replace '-o 0 -g 0' ""
  '';

  installFlags = [
    "prefix=/"
    "DESTDIR=$$out"
  ];

  meta = {
    description = "IRC client that runs as a daemon accepting notification requests";
    homepage = "https://gitlab.com/esr/irker";
    license = lib.licenses.bsd2;
    maintainers = [ ];
    mainProgram = "irkerd";
    platforms = lib.platforms.unix;
  };
}