anchor.diff:  
     postPatch = ''
       # Don't build any tests
  +    grep -q -r "subdir('test" --include meson.build .
       find . -name meson.build -exec sed -i -e "/subdir('test/d" -e '/^[ ]*test/d' {} \;
   
       # Fix systemd unit dirs
  
positive.code: , dbus
  , expat
  , glib
  , linux-headers_4-14
  , libselinux
  , systemd_lib
  , systemd-dummy
  }:
  
  let
    version = "13";
  in
  stdenv.mkDerivation rec {
    name = "dbus-broker-${version}";
  
    src = fetchurl {
      url = "https://github.com/bus1/dbus-broker/releases/download/v${version}/${name}.tar.xz";
      sha256 = "6ac2851d0c7fc985add872439ea5a501d9d7996b7c22315cf5d237f99489335d";
    };
  
    nativeBuildInputs = [
  
negative.code:     expat
      dbus
      glib
      libcap-ng
      linux-headers_triton
      libselinux
      systemd_lib
      systemd-dummy
  