batman nix

hosts/mba/nix.nix

@@ -0,0 +1,31 @@
+# This file seems like generic nix config options could be moved to common in future
+{
+  pkgs,
+  lib,
+  system,
+  ...
+}: {
+  nixpkgs.config.allowUnfree = true;
+
+  # Cross-compile GNU/Linux binaries, or even full GNU/Linux system images
+  # from someone's config, could be useful but idk
+  # nix.linux-builder.enable = true;
+
+  nix.settings.experimental-features = "nix-command flakes";
+
+  nixpkgs.hostPlatform = "${system}";
+
+  services.nix-daemon.enable = true;
+
+  nix.gc = {
+    user = "root";
+    automatic = lib.mkDefault true;
+    options = lib.mkDefault "--delete-older-than 7d";
+  };
+
+  # Disable auto-optimise-store because of this issue:
+  # https://github.com/NixOS/nix/issues/7273
+  # nix.settings = {
+  #     auto-optimise-store = false;
+  # };
+}