modules: merge some nixos/darwin modules

1 files changed, 26 insertions, 0 deletions

diff --git a/modules/shared/base/nix.nix b/modules/shared/base/nix.nix
new file mode 100644
index 0000000..21af0e0
--- /dev/null
+++ b/modules/shared/base/nix.nix
@@ -0,0 +1,26 @@
+{
+  config,
+  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 = {
+      settings = {
+        auto-optimise-store = isLinux;
+        experimental-features = ["nix-command" "flakes" "auto-allocate-uids" "repl-flake"];
+      };
+
+      gc = {
+        automatic = mkDefault true;
+        options = mkDefault "--delete-older-than 7d";
+      };
+    };
+  };
+}