Scimmia [1] filed a deletion request for polkit-efl [2]: After talking to the developer, it turns out there is no stable release yet. The tarballs I used were pre-release and the tag in the git repo is a mistake. I'll re-upload this when there is a stable release.
[1] https://aur.archlinux.org/account/Scimmia/ [2] https://aur.archlinux.org/pkgbase/polkit-efl/
