nixos-cachyos-kernel

The CachyOS LTS kernel for NixOS.

This is built from the default NixOS kernel config + additional config sourced from the CachyOS PKGBUILD and patches. Therefore, the config may not exactly match that of CachyOS.

For the CachyOS Stable, Server, and Hardened kernels, see Chaotic Nyx.

Installation

Binary cache

First, add the binary cache:

nix.settings = {
  substituters = [ "https://drakon64-nixos-cachyos-kernel.cachix.org" ];
  trusted-public-keys = [ "drakon64-nixos-cachyos-kernel.cachix.org-1:J3gjZ9N6S05pyLA/P0M5y7jXpSxO/i0rshrieQJi5D0=" ];
};

then run sudo nixos-rebuild switch to update your Nix config.

Following this, you can then add the kernel to your NixOS config like so:

boot.kernelPackages = with pkgs; linuxPackagesFor linuxPackages_cachyos;

Adding the input

This repository must then be added as an input to your config:

Flakes

In your flake.nix file:

{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    nixos-cachyos-kernel.url = "github:drakon64/nixos-cachyos-kernel";
  };
  
  outputs =
    {
      self,
      nixpkgs,
      nixos-cachyos-kernel,
    }:
    {
      nixosConfigurations = {
        nixos = nixpkgs.lib.nixosSystem {
          modules = [
            ./configuration.nix
            nixos-cachyos-kernel.nixosModules.default
          ];
        };
      };
    };
}

Rebuilding the system

Finally, run sudo nixos-rebuild boot and reboot into the new kernel.

Credits

• The CachyOS Team for providing the patches and PKGBUILD that this package uses
• niklaskorz and NotAShelf for explaining Linux kernel packaging with Nix to me