hi guys. i'm interessed in delta packages. I'm a brazilian with a poor english, then sorry by the kill of the languege. the delta packages need 3 things in my vision... 1 - rebuild instaled packages for the upgrade no needing a permanet cacheThis huge and ugly shell line mke this. pacman -Ql kdemod-shaman | awk '{if ($1 == "kdemod-shaman") print $2}' | xargs ls -ld | grep -v '^d' | awk '{ print $9 }' | xargs tar cf shaman.pkg.tar 3 - not expend lots ofspace in the server with delta files life Fedora and SUSE. The rsync protocol update a file downoading the changed parts of then. the server unly store the lastet version, like today. 3 - Updae the rebuilded package with any server. them need use http and ftp protocols This prograns provides this. http://zsync.moria.org.uk/ Then... Its necessary in the creation of package use gzip with the --rsyncable flag and create a zsync file. When upgrading a instaled package the pacman needs an alias to rebuild the package with the --rsyncable flag too and download then with the zsync. the xdelta is more eficient in bandwidth, but the zsync is it in storage space. Bye folks.