-Q flag is not being recognised

[udontur]

I have confirmed that this is a bug related to nh

• [x] This is a bug, and not an user error or a support request. I understand that my issue will be closed if it is not a bug in NH.
• [x] I have checked the issues tab and confirmed that my issue has not yet been reported. I understand that my issue will be closed if it is a duplicate.

Description

When I do nh os switch -Q, it should suppress the build outputs, but it said the flag is not being recognised:

Full output:

> Building NixOS configuration
error: unrecognised flag '--no-build-output'
Try 'nix --help' for more information.
Finished at 10:32:56 after 0s
Error: 
   0: Target profile path does not exist: /tmp/nh-osZA9Egs/result

Location:
   src/nixos.rs:224

Installation Method

Stable Release (nixpkgs, pkgs.nh from nixos-unstable or nixos-yy-mm)

Installation Method (Other)

No response

NH Version

v4.2.0

System Information

• system: "x86_64-linux"
• host os: Linux 6.12.51, NixOS, 25.11 (Xantusia), 25.11.20251009.0b4defa
• multi-user?: yes
• sandbox: yes
• version: nix-env (Nix) 2.31.2
• channels(root): "nixos"
• nixpkgs: /nix/store/3mpwmcgcjld1jxr5r0allm3c0qkxvcfx-source

[faukah]

I can reproduce this on master. This flag does not even seem to exist for nix. I am not quite sure if the flag we want is actually --quiet, or something entirely else.

[udontur]

Thank you for reproducing it!

I suppose the --no-build-output flag and --quite suppresses the following build logs and only display the dependency graph and the timer:

But seems like --quite doesn't do that too, should that the be the case?