`programs.nh.clean.extraArgs` doesn't seem to work #504

Closed Answered by mdaniels5757

demo-err asked this question in Q&A

demo-err
Dec 10, 2025

I have programs.nh.clean.extraArgs = "--optimise"; in my config file, but it doesn't seem to run when i do

nh clean all -k2

It doesn't execute the extra optimization step after garbage collection.

Is this a bug?

typing the intended command works: nh clean all -k2 --optimise

Answered by mdaniels5757

The extra arguments are only supposed to be passed to nh clean "when the service is run automatically" (not when you run the command yourself). See https://github.com/NixOS/nixpkgs/blob/6a65168d976afcf68f2b392bee98f00b1ec88cab/nixos/modules/programs/nh.nix#L60C37-L60C74 and https://github.com/nix-community/home-manager/blob/e5b1f87841810fc24772bf4389f9793702000c9b/modules/programs/nh.nix#L90.

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Replies: 1 comment

mdaniels5757
Dec 10, 2025

The extra arguments are only supposed to be passed to nh clean "when the service is run automatically" (not when you run the command yourself). See https://github.com/NixOS/nixpkgs/blob/6a65168d976afcf68f2b392bee98f00b1ec88cab/nixos/modules/programs/nh.nix#L60C37-L60C74 and https://github.com/nix-community/home-manager/blob/e5b1f87841810fc24772bf4389f9793702000c9b/modules/programs/nh.nix#L90.

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