maralorn

Can you please share the command you ran?

I am surprised that this is working at all. But I agree it’s weird that it works for some lines and doesn‘t for others.

The wish for a nom supported nixos-rebuild has been voiced before. And is definitely an open feature request. But I think it is more about changing nixos-rebuild than solving this...

No, that’s basically what I do.

@kurnevsky That seems highly unlikely.

Well, nixos-rebuild also sets the generation via nix-env.

Thank you! That's excellent debugging data. I have already fixed a number of space leaks a few weeks ago. So maybe this is already better on main. I will get...

Yeah, I probably should. Sadly there are a few modifications in main which I consider experimental and don't want to release into the wild without polishing them.

I have published a new release and opened a PR against Nixpkgs in https://github.com/NixOS/nixpkgs/pull/231922. I will leave this issue open until I have debugged the remaining performance difference between nom-build...

I still haven’t profiled this issue exactly, but one obvious problem came to mind, which I have fixed on main, reducing test time by another 50%. I quite consciously had...