I know that this topic was discussed in January this year and we
decided to put it to AUR and if it have enough votes to [community].
For all new developers, here is the discussion from January:
Now it's in community, but it's outdated and which is the real problem,
you must build it with a fresh built and installed mono during
compilation time. It depends very close to mono and therefor I would
like to bring it to [extra], to maintain it with the rest of the mono
stack which I already do.
Also a bug report was posted because of this issue:
The maintainer in community seems not be active anymore (Timm Preetz)
and moonlight is orphan.