1 files changed, 42 insertions, 0 deletions
diff --git a/parts/modules/shared/base/nix.nix b/parts/modules/shared/base/nix.nix
new file mode 100644
index 0000000..2c95933
--- /dev/null
+++ b/parts/modules/shared/base/nix.nix
@@ -0,0 +1,42 @@
+{
+  config,
+  inputs,
+  lib,
+  pkgs,
+  ...
+}: let
+  cfg = config.base.nix-settings;
+  inherit (lib) mkDefault mkEnableOption mkIf;
+  inherit (pkgs.stdenv) isLinux;
+in {
+  options.base.nix-settings.enable = mkEnableOption "base nix settings";
+
+  config = mkIf cfg.enable {
+    nix = {
+      registry =
+        {
+          n.flake = mkDefault inputs.nixpkgs;
+        }
+        // (builtins.mapAttrs (_: flake: {inherit flake;})
+          (inputs.nixpkgs.lib.filterAttrs (n: _: n != "nixpkgs") inputs));
+
+      settings = {
+        auto-optimise-store = isLinux;
+        experimental-features = ["nix-command" "flakes" "auto-allocate-uids" "repl-flake"];
+
+        trusted-substituters = ["https://cache.garnix.io"];
+        trusted-public-keys = ["cache.garnix.io:CTFPyKSLcx5RMJKfLo5EEPUObbA78b0YQ2DTCJXqr9g="];
+      };
+
+      gc = {
+        automatic = mkDefault true;
+        options = mkDefault "--delete-older-than 7d";
+      };
+    };
+
+    nixpkgs = {
+      overlays = with inputs; [nur.overlay getchoo.overlays.default self.overlays.default];
+      config.allowUnfree = true;
+    };
+  };
+}