pkgdelta is used to create package delta files between two versions of the same package. These files are essentially binary patches. pacman(8) can download deltas instead of full package upgrades, and use them with the previous versions of packages (in the package cache) to synthesize the upgraded version of the packages. This likely reduces download sizes for upgrades significantly.
pkgdelta requires xdelta3(1) to do its job.
$ pkgdelta libreoffice-3.3.2-1-x86_64.pkg.tar.xz libreoffice-3.3.2-2-x86_64.pkg.tar.xz
See the pacman website at https://www.archlinux.org/pacman/ for current information on pacman and its related tools.
Bugs? You must be kidding; there are no bugs in this software. But if we happen to be wrong, send us an email with as much detail as possible to email@example.com.
Past major contributors:
For additional contributors, use git shortlog -s on the pacman.git repository.