Codebase is identical to 0.8.1, except we now use Ubuntu 22.04 runners for the Linux build since those are the oldest ones currently offered by Github as of two weeks ago.
Outside of lacking extrinsic motivation to build it out myself, I'd be open to supporting 20.04 builds.
If you'd like to tackle it, stepchowfun/toast seems like a nice way to set up an environment.
A chroot is probably fine too.
Opaque remote-only CI is a miserable dumpster fire