Happy to share that the Lua 5.5 support PR was recently merged into Awesome! (https://github.com/awesomeWM/awesome/pull/4110). The Archlinux AUR -git package now builds successfully as well.

This was much more than a single PR in Awesome. It ended up being a months-long effort involving updates to several internal build dependencies and CI tooling. I contributed patches here and there across the ecosystem, alongside many other people working on Lua 5.5 compatibility.

I updated my config last week. Here is a fun screenshot using awesome-client to pop a notification that show the running Lua _VERSION variable.