HashSharedMem = final.perlPackages.buildPerlModule {
            pname = "Hash-SharedMem";
            version = "0.005";
            src = final.fetchurl {
              url = "mirror://cpan/authors/id/Z/ZE/ZEFRAM/Hash-SharedMem-0.005.tar.gz";
              sha256 = "324776808602f7bdc44adaa937895365454029a926fa611f321c9bf6b940bb5e";
            };
            buildInputs = with final.perlPackages; [ ScalarString ];
            meta = {
              description = "Efficient shared mutable hash";
              license = with final.lib.licenses; [ artistic1 gpl1Plus ];
            };
          };