anchor.diff:  
     mesonFlags = [
       "-Ddocs=true"
  -    "-Dgstreamer=true"
  +    "-Dgstreamer=enabled"
     ];
   
     PKG_CONFIG_SYSTEMD_SYSTEMDUSERUNITDIR = "${placeholder "out"}/lib/systemd/user";
  
positive.code:     owner = "PipeWire";
      repo = "pipewire";
      rev = version;
      sha256 = "1y04brfi5bv4y0hdyqzrcbayr674njf6a5hiwjfv2yi6lazkqv1k";
    };
  
    outputs = [ "out" "lib" "dev" "doc" ];
  
negative.code: }:
  
  let
    version = "0.2.5";
  
    fontsConf = makeFontsConf {
      fontDirectories = [ freefont_ttf ];
  