site_archiver@lists.apple.com Delivered-To: installer-dev@lists.apple.com have fun, -Rick _______________________________________________ Do not post admin requests to the list. They will be ignored. Installer-dev mailing list (Installer-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/installer-dev/site_archiver%40lists.a... Ditto on the fact that a "pax" archive is not bound to any compression technique. See the "pax" man page for more detail. However, if the Apple "Installer.app" will only uncompress a "gzip" file, then that is that! But, you might be able to add some tricks to your package, to pull off what you are looking for. One idea: Precompress the files that make up the archive, using whatever method is best for you. Then, run a "post____" script to decompress. You may have to supply the decompression tool in the package itself, if not a standard MacOS X installed item. This would of course reduce your gains! This email sent to site_archiver@lists.apple.com