hyprland-wiki/pages/Nix/Cachix.md

Hyprland is not built by Hydra and cached in cache.nixos.org, like the rest of the Nixpkgs packages.

Instead of requiring you to build Hyprland (and its dependencies, which may include mesa, ffmpeg, etc), we provide a Cachix cache that you can add to your Nix configuration.

The Hyprland Cachix exists to cache the hyprland packages and any dependencies not found in cache.nixos.org.

{{< hint >}} In order for Nix to take advantage of the cache, it has to be enabled before enabling the Hyprland module(s) or adding the package. {{< /hint >}}

{{< hint type=important >}} Overriding Hyprland's nixpkgs input (inputs.hyprland.inputs.nixpkgs.follows = "nixpkgs";) will make the cache useless, since you're building from a different Nixpkgs commit. {{< /hint >}}

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