Chazza [1] filed a orphan request for libgcal [2]: Requesting that this be orphaned so I can take over maintenance. This package hasn't been updated since 2010 and currently won't build as it doesn't conform to the new Pacman syntax - namely, it has no package() function. I requested in the comments that the maintainer update the package back in December and received no response. [1] https://aur.archlinux.org/account/Chazza/ [2] https://aur.archlinux.org/pkgbase/libgcal/