MarsSeed [1] filed a deletion request for python-ruamel-yaml-hg [2]: Unmaintained, unused, broken VCS package from 2020. As such, it's not useful to keep.
Repo carries the latest stable release. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/python-ruamel-yaml-hg/
