nixpkgs/pkgs/development/libraries/webkit/src-info-for-default.nix

{
  downloadPage = "http://webkitgtk.org/?page=download";
  versionExtractorSedScript = "s/.*-([.0-9]+)[.].*/\\1/";
  versionReferenceCreator = "s/-([.0-9.]+)[.]/-\${version}./";
  baseName = "webkit";
}