Cross posting so that the OP realizes this community is alive. I have no issues with qemu, which is installed on my system with no issues.
Posting here as there doesn't seem to be an active Arch Linux community.
I noticed while updating my system today that I have a bunch of qemu packages I don't recall installing. So I took a look at why they were there and found this:
Name : qemu-base
Required By : qemu-desktop
Install Reason : Installed as a dependency for another package
Name : qemu-desktop
Required By : None
Optional For : qemu-base
Install Reason : Installed as a dependency for another package
It seems like qemu-desktop was a dependency for something I later removed and pulled in qemu-base. However, because of the dependency cycle, they aren't showing up as orphans and has just been hanging around in my system along with 150mb of other dependencies.
Correct?
Edit: Adding clarification on why this was cross posted, and no I'm not the OP.
That is mostly correct, although this is not a true cycle, since you can find packages that are strictly optional depencies, i.e. not a hard requirement for anything.