MarsSeed [1] filed a deletion request for ubuntu-kylin-theme [2]: This theme package is abandoned since 4 years ago, and if installed, it breaks the gtk icon cache. I do not need this theme, and I don't have enough knowledge (nor incentive to gain such) to fix it. I think it is better to delete. Seems there is zero interest in this package by other people on AUR. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/ubuntu-kylin-theme/