anchor.diff:       };
     };
   
  +  MathBase85 = buildPerlPackage {
  +    pname = "Math-Base85";
  +    version = "0.4";
  +    src = fetchurl {
  +      url = mirror://cpan/authors/id/P/PT/PTC/Math-Base85-0.4.tar.gz;
  +      sha256 = "03cbp5ls98zcj183wjzlzjcrhbc96mw3p1hagzy1yplj1xh5ia4y";
  +    };
  +    meta = {
  +      description = "Perl extension for base 85 numbers, as referenced by RFC 1924";
  +      license = with stdenv.lib.licenses; [ artistic1 gpl1Plus ];
  +    };
  +  };
  +
     MathLibm = buildPerlPackage {
       pname = "Math-Libm";
       version = "1.00";
  
positive.code:     };
    };
  
    ClassInspector = buildPerlPackage {
      pname = "Class-Inspector";
      version = "1.36";
  
negative.code:     };
    };
  
    Future = buildPerlModule {
      pname = "Future";
      version = "0.43";
      src = fetchurl {
        url = mirror://cpan/authors/id/P/PE/PEVANS/Future-0.43.tar.gz;
        sha256 = "191qvn3jz5pk5zxykwsg1i17s45kc82rfd6kgzsv9nki1c04dzaf";
      };
      buildInputs = [ TestFatal TestIdentity TestRefcount ];
      meta = {
        description = "represent an operation awaiting completion";
        license = with stdenv.lib.licenses; [ artistic1 gpl1Plus ];
      };
    };
  
    GamesSolitaireVerify = buildPerlModule {
      pname = "Games-Solitaire-Verify";
      version = "0.2202";
  