anchor.diff:  
       gst_all_1.gstreamer
       gst_all_1.gst-plugins-base
  +
  +    libdmapsharing_3 # necessary for daap support
     ] ++ gst_plugins;
  +
  +  configureFlags = [ "--enable-daap" ];
   
     enableParallelBuilding = true;
   
  
positive.code: , intltool
  , libpeas
  , libsoup
  , gnome
  , totem-pl-parser
  , tdb
  
negative.code: let
    pname = "rhythmbox";
    version = "3.4.4";
  
    # The API version of libdmapsharing required by rhythmbox 3.4.4 is 3.0.
  
    # This PR would solve the issue:
    # https://gitlab.gnome.org/GNOME/rhythmbox/-/merge_requests/12
    # Unfortunately applying this patch produces a rhythmbox which
    # cannot fetch data from DAAP shares.
  
    libdmapsharing_3 = libdmapsharing.overrideAttrs (old: rec {
      version = "2.9.41";
      src = fetchFromGitLab {
        domain = "gitlab.gnome.org";
        owner = "GNOME";
        repo = old.pname;
        rev = "${lib.toUpper old.pname}_${lib.replaceStrings ["."] ["_"] version}";
        sha256 = "05kvrzf0cp3mskdy6iv7zqq24qdczl800q2dn1h4bk3d9wchgm4p";
      };
    });
  
  in stdenv.mkDerivation rec {
    name = "${pname}-${version}";
  
  