feat: move stuff around a bit, created new modules.

modules/linux/nixos/nix-options.nix

@@ -0,0 +1,64 @@
+{inputs, ...}: {
+  # Enable flakes
+  nix.settings.experimental-features = ["nix-command" "flakes"];
+
+  # Enable trusted users
+  nix.settings.trusted-users = ["root" "@wheel"];
+
+  # Setup community cache
+  nix.settings = {
+    substituters = [
+      "https://nix-community.cachix.org"
+      "https://hyprland.cachix.org"
+      "https://ezkea.cachix.org"
+      "https://nix-gaming.cachix.org"
+      "https://cache.nixos-cuda.org"
+      "https://deploy-rs.cachix.org"
+      "https://attic.xuyh0120.win/lantian"
+    ];
+    trusted-substituters = [
+      "https://hyprland.cachix.org"
+    ];
+    trusted-public-keys = [
+      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+      "hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc="
+      "ezkea.cachix.org-1:ioBmUbJTZIKsHmWWXPe1FSFbeVe+afhfgqgTSNd34eI="
+      "nix-gaming.cachix.org-1:nbjlureqMbRAxR1gJ/f3hxemL9svXaZF/Ees8vCUUs4="
+      "cache.nixos-cuda.org:74DUi4Ye579gUqzH4ziL9IyiJBlDpMRn9MBN8oNan9M="
+      "deploy-rs.cachix.org-1:xfNobmiwF/vzvK1gpfediPwpdIP0rpDV2rYqx40zdSI="
+      "lantian:EeAUQ+W+6r7EtwnmYjeVwx5kOGEBpjlBfPlzGlTNvHc="
+    ];
+  };
+
+  # setup custom packages
+  nixpkgs = {
+    overlays = [
+      (final: prev: {
+        # Fix for wl-clipboard not having support for not setting sensitive for password managers
+        wl-clipboard = prev.wl-clipboard.overrideAttrs (old: {
+          version = "24-04-25";
+          src = prev.fetchFromGitHub {
+            owner = "bugaevc";
+            repo = "wl-clipboard";
+            rev = "aaa927ee7f7d91bcc25a3b68f60d01005d3b0f7f";
+            hash = "sha256-V8JAai4gZ1nzia4kmQVeBwidQ+Sx5A5on3SJGSevrUU=";
+          };
+        });
+      })
+      (import inputs.emacs-overlay)
+      inputs.nix-cachyos-kernel.overlays.pinned
+    ];
+  };
+
+  # Optimise storage
+  nix.optimise = {
+    automatic = true;
+    dates = ["weekly"];
+  };
+
+  # Enable nixd to see nixpkgs path
+  nix.nixPath = ["nixpkgs=${inputs.nixpkgs}"];
+
+  # Allow unfree packages
+  nixpkgs.config.allowUnfree = true;
+}