anchor.diff:      url = "mirror://gnome/sources/${pname}/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
       sha256 = "0q4dx9sncqbwgpzma0zvj6zssc279yl80pn8irb95qypyyggwn5y";
     };
  +
  +  patches = [
  +    (fetchpatch {
  +      name = "${pname}-${version}.fix-build-against-glib-2.68.patch";
  +      url = "https://gitlab.gnome.org/GNOME/gstreamermm/-/commit/37116547fb5f9066978e39b4cf9f79f2154ad425.patch";
  +      sha256 = "sha256-YHtmOiOl4POwas3eWHsew3IyGK7Aq22MweBm3JPwyBM=";
  +    })
  +  ];
   
     outputs = [ "out" "dev" ];
   
  
positive.code: { lib
  , stdenv
  , fetchurl
  , pkg-config
  , file
  , glibmm
  
negative.code:     license = licenses.lgpl21Plus;
      platforms = platforms.linux;
      maintainers = with maintainers; [ romildo ];
    };
  
  }
  