anchor.diff:        };
       }
       rec {
  -      name = "libnss3_3.17.1-0ubuntu0.12.04.1+srt1_amd64";
  -      md5 = "d2583ca89a2aa19abfd497be664b2fcd";
  -      source = fetchurl {
  -        url = "http://repo.steampowered.com/steamrt/pool/main/n/nss/libnss3_3.17.1-0ubuntu0.12.04.1+srt1_amd64.deb";
  +      name = "libnss3_3.19.2-0ubuntu0.12.04.1+srt1_amd64";
  +      md5 = "ba6be27b60728d1bbdc849354376adf8";
  +      source = fetchurl {
  +        url = "http://repo.steampowered.com/steamrt/pool/main/n/nss/libnss3_3.19.2-0ubuntu0.12.04.1+srt1_amd64.deb";
           inherit md5;
           name = "libnss3.deb";
         };
  
positive.code:       };
      }
      rec {
        name = "libexpat1_2.0.1-7.2ubuntu1.1+srt4_amd64";
        md5 = "18307a925d2ce2d432699073fe679b09";
        source = fetchurl {
          url = "http://repo.steampowered.com/steamrt/pool/main/e/expat/libexpat1_2.0.1-7.2ubuntu1.1+srt4_amd64.deb";
          inherit md5;
          name = "libexpat1.deb";
        };
  
negative.code:       };
      }
      rec {
        name = "libtasn1-3_2.10-1ubuntu1.4+srt1_amd64";
        md5 = "6e092ebafe0cf5a49ee9319e2cf6f4fd";
        source = fetchurl {
          url = "http://repo.steampowered.com/steamrt/pool/main/libt/libtasn1-3/libtasn1-3_2.10-1ubuntu1.4+srt1_amd64.deb";
          inherit md5;
          name = "libtasn1-3.deb";
        };
  