Getting more idomatic nix modules setup... will tackle users dir later

modules/docker.nix

@@ -0,0 +1,28 @@
+{
+  config,
+  lib,
+  settings,
+  ...
+}:
+with lib;
+let
+  name = "docker";
+  cfg = config.mods.${name};
+in
+{
+  options = {
+    mods.${name} = {
+      enable = mkEnableOption (lib.mdDoc "Enable ${name}");
+    };
+  };
+
+  config = mkIf cfg.enable {
+    virtualisation.docker.enable = true;
+    users.extraGroups.docker.members = [ settings.user.username ];
+    environment.shellAliases = {
+      dockerv = "docker volume";
+      dockeri = "docker image";
+      dockerc = "docker container";
+    };
+  };
+}