hyprland-wiki/pages/Nix/Cachix.md

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NOTE: This page only applies to the flake package. You can safely skip this if
you use the Nixpkgs package.
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The Hyprland flake is not built by Hydra, so it is not cached in
[cache.nixos.org], like the rest of Nixpkgs.
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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.
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The [Hyprland Cachix](https://app.cachix.org/cache/hyprland) exists to cache the
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`hyprland` packages and any dependencies not found in [cache.nixos.org].
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{{< hint >}}
In order for Nix to take advantage of the cache, it has to be enabled **before**
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using the Hyprland flake package.
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{{< /hint >}}
```nix
# configuration.nix
{
nix.settings = {
substituters = ["https://hyprland.cachix.org"];
trusted-public-keys = ["hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc="];
};
}
```
{{< hint type=important >}}
Do **not** override Hyprland's `nixpkgs` input unless you know what you are
doing.
Doing so will make the cache useless, since you're building from a different
Nixpkgs commit.
{{< /hint >}}
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[cache.nixos.org]: https://cache.nixos.org