In reply to @khalil:ksantana.net
I was trying to setup profiling in nix using this[1] to figure out why colmena is slower, but didn't quite succeed (I think I got a -ENOSPC or something due to /tmp/ as tmpfs or something). Do you think something like this would be useful to debug this performance behaviour?
[1] - https://github.com/crabdancing/nix-flamegraph
Yeah, I think something like this is useful in general, not just for colmena but for nixpkgs slowness as well