nixos-configs/common/modules/cachix.nix

{
  config,
  lib,
  pkgs,
  ...
}: let
  inherit (lib) optionals;
in {
  environment.systemPackages = [
    (pkgs.writeShellApplication {
      name = "rebuild-no-cache";
      runtimeInputs = [config.programs.nh.package];
      text = ''
        nh os switch -- --option binary-caches "https://cache.nixos.org" "$@"
      '';
    })
  ];

  nix = {
    settings = {
      substituters =
        [
          "https://hyprland.cachix.org"
          "https://nix-gaming.cachix.org"
          # Nixpkgs-Wayland
          "https://cache.nixos.org"
          "https://nixpkgs-wayland.cachix.org"
          "https://nix-community.cachix.org"
          # Nix-community
          "https://nix-community.cachix.org"
          # Nh
          "https://viperml.cachix.org"
          # Caddy
          "https://caddycf.cachix.org"
        ]
        ++ optionals (!config.services.nix-serve.enable && config.services.tailscale.enable) [
          # Personal config cache
          "https://cache.nelim.org"
        ]
        ++ optionals (!config.services.nix-serve.enable && !config.services.tailscale.enable) [
          "http://10.0.0.249:5000"
        ];

      trusted-public-keys = [
        "hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc="
        "nix-gaming.cachix.org-1:nbjlureqMbRAxR1gJ/f3hxemL9svXaZF/Ees8vCUUs4="
        # Nixpkgs-Wayland
        "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
        "nixpkgs-wayland.cachix.org-1:3lwxaILxMRkVhehr5StQprHdEo4IrE8sRho9R9HOLYA="
        # Nix-community
        "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
        # Nh
        "viperml.cachix.org-1:qZhKBMTfmcLL+OG6fj/hzsMEedgKvZVFRRAhq7j8Vh8="
        # Caddy
        "caddycf.cachix.org-1:6vbQaeiec/zKv9XfEwi9yWVCe7opbeJMu6w81UEXugY="
        # Personal config cache
        "cache.nelim.org:JmFqkUdH11EA9EZOFAGVHuRYp7EbsdJDHvTQzG2pPyY="
      ];
    };
  };
}