(because I needed an older compiler version for Reasons) and YIKES does that build take a long time. Something like 3 bootstrap stages at least??? and much of it seems to be single-threaded for some reason. Then, at like the last moment, it failed for some doc error already commented on on the AUR.
I was going to throw in the towel & find yet another old Ubuntu image to move my dev environment to, when I remembered: I know Nix!! A simple setup and nix-env -iA gcc-10 later (I am not caring about reproducibility), I had the binaries on my computer in like 3 minutes flat.
Forever cursing GCC for not providing binary releases, much more enamored with NixPkgs for having them so readily available...

