Former maintainer disowned it in response. Not worth keeping on AUR. EOL 2019, no dependents, build broken. On 1 October 2023 23:54:15 GMT+02:00, notify@aur.archlinux.org wrote:

MarsSeed [1] filed a deletion request for mono5 [2]:

No package requires this legacy Mono version, which is EOL since 2019.

The build is broken as per reported multiple times since 2020-09.

Also, this conflicts with extra repo's newer mono. As such, it violates the AUR submission guidelines (AUR packages should not create different or same version builds of repo packages. Non-conflicting builds are okay if there is a need for a different version of the package.)

It's safe to delete this superfluous package.

[1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/mono5/