[chlorion]

I did not realize you were a Gentoo contributor when I first responded!

This is an interesting problem for sure. I don't know enough about portage internals to know whether it could be fixed easily, but it would be very nice to have.

So far I haven't really ran into any consistency issues caused by non-atomic upgrades. The only thing that comes to mind is needing to restart a zsh instance that was running during an upgrade that included it, and Firefox will sometimes tell me it needs to restart!

I have a fairly fast CPU (ryzen 3900x) so the time spent in an inconsistent state is probably much shorter than it is for others, I suppose this is why it's never bothered me before.