MarsSeed [1] filed a deletion request for gnash-git [2]: EOL since 2017. [a] FTBFS since 2017, according to upstream bug reports [a] and Fedora packagers [b]. Not maintained by either Debian/Ubuntu, Fedora, Gentoo, OpenSUSE. Not useful to keep. There is a new Flash player implementation called LightSpark that works and is available from AUR. [d] [a]: https://git.savannah.gnu.org/cgit/gnash.git/commit/?id=583ccbc [b]: https://src.fedoraproject.org/rpms/gnash [c]: https://savannah.gnu.org/bugs/?group=gnash [d]: https://aur.archlinux.org/packages?K=lightspark [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/gnash-git/