MarsSeed [1] filed a deletion request for opennx [2]: Defunct, discontinued NX protocol based remote desktop client from 2016. [a] Upstream website is an empty page. [b] PKGBUILD reported broken in 2017. Its dependency wxgtk2.8 cannot be built due to some cryptic "thread.h not found" error which so far even several experienced maintainers have not been able to track down. But there is no need to keep this deprecated package alive: there are better alternative remote desktop clients. Also Remmina for example supports the NX proticol. [a]: https://sourceforge.net/projects/opennx/ [b]: https://opennx.sourceforge.net/ [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/opennx/