anchor.diff:      propagatedBuildInputs = [ URI ];
     };
   
  +  UserIdentity = buildPerlPackage rec {
  +     name = "User-Identity-0.99";
  +     src = fetchurl {
  +       url = mirror://cpan/authors/id/M/MA/MARKOV/User-Identity-0.99.tar.gz;
  +       sha256 = "0c2qwxgpqncm4ya3rb5zz2hgiwwf559j1b1a6llyarf9jy43hfzm";
  +     };
  +     meta = {
  +       description = "Collect information about a user";
  +       license = with stdenv.lib.licenses; [ artistic1 gpl1Plus ];
  +     };
  +  };
  +
     URIIMAP = buildPerlPackage {
       name = "URI-imap-1.01";
       src = fetchurl {
  
positive.code:       license = stdenv.lib.licenses.gpl2;
        maintainers = with maintainers; [ romildo ];
      };
    };
  
    MailDKIM = buildPerlPackage rec {
  
negative.code:       license = with stdenv.lib.licenses; [ artistic1 gpl1Plus ];
        maintainers = [ maintainers.rycee ];
      };
    };
  
    MailTransport = buildPerlPackage rec {
       name = "Mail-Transport-3.002";
       src = fetchurl {
         url = mirror://cpan/authors/id/M/MA/MARKOV/Mail-Transport-3.002.tar.gz;
         sha256 = "0wm4j9w15nsvjxi9x22fn2rnljbffd88v27p0z0305bfg35gh4kg";
       };
       propagatedBuildInputs = [ MailMessage ];
       meta = {
         description = "Email message exchange";
         license = with stdenv.lib.licenses; [ artistic1 gpl1Plus ];
       };
    };
  
    MathLibm = buildPerlPackage rec {
  