pinwheel: Add enable option for podman

hosts/pinwheel/configuration.nix

@@ -143,6 +143,7 @@
     openvpn.enable = true;
     go.enable = true;
     keyboard.enable = true;
+    podman.enable = false;
   };
 
   # This value determines the NixOS release from which the default

hosts/pinwheel/modules/podman/default.nix

@@ -1,18 +1,31 @@
-{ pkgs, ... }:
+{ pkgs, lib, config, ... }:
+let
+  enabled = config.mod.podman.enable;
+in
 {
-  virtualisation = {
-    podman = {
-      enable = true;
-
-      # Create a `docker` alias for podman, to use it as a drop-in replacement
-      dockerCompat = true;
-
-      # Required for containers under podman-compose to be able to talk to each other.
-      defaultNetwork.settings.dns_enabled = true;
+  options = {
+    mod.podman = {
+      enable = lib.mkEnableOption "enable podman module";
     };
   };
 
-  home-manager.users.alex = {
-    home.packages = [ pkgs.podman-compose ];
+  config = lib.mkIf enabled {
+    virtualisation = {
+      podman = {
+        enable = true;
+
+        # Create a `docker` alias for podman, to use it as a drop-in replacement
+        dockerCompat = true;
+
+        # Required for containers under podman-compose to be able to talk to each other.
+        defaultNetwork.settings = {
+          dns_enabled = true;
+        };
+      };
+    };
+
+    home-manager.users.alex = {
+      home.packages = [ pkgs.podman-compose ];
+    };
   };
 }