Stylix and nixpkgs version mismatch

matt · May 18, 2025, 1:43am

Hey all,

Kinda confused about this issue that just started popping up today.

On rebuild I’m receiving:

evaluation warning: You are using different Stylix and NixOS versions. This is
likely to cause errors and unexpected behavior. It is highly
recommended that you use a version of Stylix that matches your chosen
version of NixOS.
                If you are willing to accept the risks that come with using
                mismatched versions, you may disable this warning by adding

                    stylix.enableReleaseChecks = false;

                to your configuration.

In my flake.nix I have these inputs:

    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
    home-manager = {
      url = "github:nix-community/home-manager";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    stylix = {
      url = "github:danth/stylix";
      inputs.nixpkgs.follows = "nixpkgs";
    };

I can’t figure out why there would be a version mismatch… any ideas?

waffle8946 · May 18, 2025, 1:53am

github.com/danth/stylix

stylix: 25.05 release

opened 01:49AM - 16 May 25 UTC

awwpotato

tracking-issue

Following the final merge of staging-next in nixpkgs[^1] we should start plannin…g for our branch off to ensure a more timely release than 24.11[^2]. - [ ] Update any targets for breaking changes from staging-next[^1], this should start during the beta period[^3] or earlier if possible. - [ ] https://github.com/danth/stylix/issues/1293 - [x] https://github.com/danth/stylix/issues/1294 - [ ] Create `release-25.05` branch and backport label - [ ] Update any references to 24.11 to 25.05 and remove backport 24.11 label as 24.11 will not longer be receiving updates (should be done after official release of 25.05 in nixpkgs[^3]) [^1]: https://github.com/NixOS/nixpkgs/pull/404858 [^2]: https://github.com/danth/stylix/issues/655 [^3]: https://github.com/NixOS/nixpkgs/issues/390768

github.com/danth/stylix

stylix/release.nix

91b23c7bc


      
          { lib, ... }:
          {
            options.stylix = {
              release = lib.mkOption {
                description = "The version of NixOS that Stylix is built to support";
                default = "25.05";
                internal = true;
                readOnly = true;
              };
              enableReleaseChecks = lib.mkOption {
                description = ''
                  Whether to check that the Stylix release matches the releases of
                  NixOS, Home Manager, and nix-darwin. Checks are only performed if the
                  component in question is used.
          
                  If this option is enabled and a mismatch is detected, a warning will be

matt · May 18, 2025, 2:05am

Awesome, thanks for the info and letting me know I’m not going crazy.

waffle8946 · May 18, 2025, 9:15am

You might still be, nix will do that to a person

But yeah you can either disable the warning (via the option mentioned in the error), ignore the warning and wait for the fix, fork and use your own fork, or fork and PR the fix yourself.

I’d probably disable the check regardless since I don’t think it’s well-designed (for one, it compares a single version to three different projects that all bump their versions at different times), but depends how much it bothers you