NixOS with flake not using hyprland cachix

Help
1

Hello,
I manage my NixOS and home-manager config in a flake.
I want to use the Hyprland flake, so I added these lines to my configuration.nix:

nix.settings = {
  trusted-users = ["railwhale"];
  substituters = ["https://hyprland.cachix.org" "https://cache.nixos.org"];
  trusted-public-keys = ["hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc="];
};

And set Hyprland’s package:

{ inputs, system, ... }: {
  programs.hyprland = {
    enable = true;
    package = inputs.hyprland.packages.${system}.hyprland;
  };
}

However, when I run nixos-rebuild, It tells me it’s building Xwayland, XDPH, or another Hyprland thing.
I have tried setting substitutors and trusted-public-keys in my flake.nix using nixConfig. I confirmed that I wanted to use those settings, and it still didn’t use the cache.

My configuration.nix
My Hyprland block
My flake.nix

2

You need to add the new cache in one step, activate that, then add the new stuff in another step; then try to build/activate.

In other words, the new cache you added won’t be effective until a generation with it is activated. It sounds like you’re adding the new software and the cache at the same time, which would cause what you’re describing.

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