Add caches for Hyprland and FjordLauncher

modules/core/default.nix

@@ -10,6 +10,7 @@
     [(import ./bootloader.nix)]
     ++ [(import ./hardware.nix)]
     ++ [(import ./xserver.nix)]
+    ++ [(import ./nix.nix)]
     ++ [(import ./network.nix)]
     ++ [(import ./pipewire.nix)]
     ++ [(import ./programs.nix)]

modules/core/nix.nix

@@ -0,0 +1,13 @@
+{...}: {
+  nix.settings = {
+    trusted-substituters = [
+      "https://cache.garnix.io"
+      "https://hyprland.cachix.org"
+    ];
+
+    trusted-public-keys = [
+      "cache.garnix.io:CTFPyKSLcx5RMJKfLo5EEPUObbA78b0YQ2DTCJXqr9g="
+      "hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc="
+    ];
+  };
+}