anchor.diff: -{stdenv, fetchurl, perl, XMLSimple}:
  +{stdenv, fetchurl, perl, XMLSimple, librsvg}:
   
   stdenv.mkDerivation rec {
     name = "icon-naming-utils-0.8.90";
  
positive.code:           --replace '/bin/perl' '/bin/perl -I${XMLSimple}/lib/perl5/site_perl'
      '';
  
    meta = {
      homepage = http://tango.freedesktop.org/Standard_Icon_Naming_Specification;
    };
  }
  
negative.code:     sha256 = "071fj2jm5kydlz02ic5sylhmw6h2p3cgrm3gwdfabinqkqcv4jh4";
    };
    
    buildInputs = [perl XMLSimple librsvg];
  
    postInstall =
      ''
  