Version mismatch in my flake: Home Manager 26.05 & Nixpkgs 25.11

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1

I get this message when I do nixos-rebuild: You are using Home Manager version 26.05 and Nixpkgs version 25.11. Using mismatched versions is likely to cause errors and unexpected behavior .... I tried changing system.stateVersion and home.stateVersion from 25.11 to 26.05 but still. I also deleted all channels.

flake.nix:

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

configuration.nix:

  system.stateVersion = "26.05";

  home-manager = {
    useGlobalPkgs = true;
    useUserPackages = true;
    users.username =
      {
        config,
        pkgs,
        inputs,
        ...
      }:
      {
        home = {
          stateVersion = "26.05";
        };
      };
  };
2

Stop touching those. Those are irrelevant.

Run nix flake update to ensure your inputs are up to date.

1 Like
3

See also here why you should never touch them: FAQ/When do I update stateVersion - Official NixOS Wiki

4

It eventually went away, perhaps I did in fact need a flake upgrade.

1 Like