Yes, the qemu solution seems simpler and more future-proof than the custom Unifi repository.

Also, my guess would be that few people running Wekan on hardware old enough not to have AVX will have a massively large user base on their installation; most are probably small-time hobbyists like myself, so any negligible slowdowns being exacerbated by scale won’t be much of an issue.

I can already guess the answer to this is ”no, because of how snap works”, but would it be possible for Wekan (installed as a snap) to use mongodb tools already installed on the host system? The reason I’m asking is that I’m running Unifi’s network application on the same non-AVX-capable host, and the installation script for it has added a mongodb repository patched to work without AVX, so that’s already covered.