anchor.diff:        "--with-systemdsystemunitdir=$(out)/etc/systemd/system"
         "--with-systemduserunitdir=$(out)/etc/systemd/user"
         "--enable-user-session"
  -      # this package installs nothing into those dirs and they create a dependency
  -      "--datadir=/run/current-system/sw/share"
         "--libexecdir=$(out)/libexec" # we don't need dbus-daemon-launch-helper
       ] ++ lib.optional (!x11Support) "--without-x";
   
  
positive.code: 
      doCheck = true;
  
      installFlags = "sysconfdir=$(out)/etc datadir=$(out)/share";
  
      # it's executed from $lib by absolute path
      postFixup = ''
  
negative.code:   version = "1.10.14";
    sha256 = "10x0wvv2ly4lyyfd42k4xw0ar5qdbi9cksw3l5fcwf1y6mq8y8r3";
  
  self = stdenv.mkDerivation {
      name = "dbus-${version}";
      inherit version;
  
      src = fetchurl {
        url = "http://dbus.freedesktop.org/releases/dbus/dbus-${version}.tar.gz";
  