anchor.diff:      };
     };
   
  -  meta = with stdenv.lib; {
  +  meta = with lib; {
       description = "A C library to make the use of LV2 plugins";
       homepage = https://drobilla.net/software/lilv;
       license = licenses.mit;
  
positive.code: { stdenv
  , fetchurl
  , python
  
  , lv2
  , serd
  
negative.code: }:
  
  stdenv.mkDerivation rec {
    name = "lilv-0.24.0";
  
    src = fetchurl {
      url = "https://download.drobilla.net/${name}.tar.bz2";
      sha256 = "fa60de536d3648aa3b1a445261fd77bd80d0246a071eed2e7ca51ea91a27fb9e";
    };
  
    nativeBuildInputs = [
      waf
    ];
  
    buildInputs = [
  