It'd be nice to use nix output monitor for builds - there's a project which automatically uses nix output monitor when nix is called (even supporting nix-direnv/nixos-rebuild)... this looks probably good for us to use.
There is one issue of some importance on the nix-monitored tracker which suggests that nix-monitored incorrectly transforms some 'nix run' invocations... fortunately, we don't use flakes so this shouldn't be a huge issue
If it is, using
NIX_MONITOR=disable
will temporarily disable nix monitor, allowing you to run whatever you needed without issue while using nom for everything else