bug: nix version used by nix-direnv doesn't respect nix.package option

[adrian-gierakowski]

Are you following the right branch?

• [X] My Nixpkgs and Home Manager versions are in sync

Is there an existing issue for this?

• [X] I have searched the existing issues

Issue description

when I enable direnv with nix-direnv via:

  programs.direnv.enable = true;
  programs.direnv.nix-direnv.enable = true;

in my home-manager config (as opposed to nixos config) and when I change the version of nix to be used by the system via nix.package option

nix-direnv used by direnv call the default nix from nixpkgs, instead of the one set with nix.package

to fix this I need to set:

  programs.direnv.nix-direnv.package = pkgs.nix-direnv.override { nix = config.nix.package; };

I believe this should be done automatically, as it's done in the nixos module:

https://github.com/NixOS/nixpkgs/blob/1042fd8b148a9105f3c0aca3a6177fd1d9360ba5/nixos/modules/programs/direnv.nix#L53

Maintainer CC

No response

System information

- system: `"x86_64-linux"`
 - host os: `Linux 6.6.25, NixOS, 24.05 (Uakari), 24.05.20240406.ff0dbd9`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.21.1`
 - channels(root): `"nixos-22.05pre351617.942b0817e89"`
 - nixpkgs: `/nix/store/j10523yhkcc34478azkgcl70yzcx6j2j-source`

[adrian-gierakowski]

btw. I'm using nix.package = pkgs.nixVersions.nix_2_21 as it seems to be the only secure version of nix which doesn't reject files starting with a dot

[stale[bot]]

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[adrian-gierakowski]

Not stale

[adrian-gierakowski]

I can submit a fix if it would be welcome