rework modules

Signed-off-by: unexplrd <unexplrd@linerds.us>

modules/nixos/system/virt/podman.nix

@@ -0,0 +1,29 @@
+{
+  pkgs,
+  config,
+  lib,
+  ...
+}:
+with lib; let
+  cfg = config.module.virt.podman;
+in {
+  options = {
+    module.virt.podman.enable =
+      mkEnableOption "enables podman";
+  };
+  config = mkIf cfg.enable {
+    virtualisation = {
+      containers.enable = true;
+      podman = {
+        enable = true;
+        dockerCompat = true;
+        defaultNetwork.settings.dns_enabled = true;
+      };
+    };
+    virtualisation.oci-containers.backend = "podman";
+    environment.systemPackages = with pkgs; [
+      podman-tui
+      podman-compose
+    ];
+  };
+}