anchor.diff:        sha256 = "9c2c7edde4f59d74eb414e0701c55131f562e5c605a3ce9b091754f106c09e37";
       };
     };
  -
     source = sources."${channel}";
   in
   stdenv.mkDerivation rec {
  
positive.code: { stdenv
  , fetchurl
  , lib
  , python3
  
  , bzip2
  
negative.code:   };
  
    nativeBuildInputs = [
      meson
      ninja
      python3
    ];
  
  