MarsSeed [1] filed a deletion request for libumlib0-svn [2]: Development discontinued since 2018. [a]
[a]: https://sourceforge.net/p/view-os/code/HEAD/tree/ [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/libumlib0-svn/
