diff --git a/rwx/cmd/__init__.py b/rwx/cmd/__init__.py
index de764fa..e3b75bc 100644
--- a/rwx/cmd/__init__.py
+++ b/rwx/cmd/__init__.py
@@ -1,8 +1,11 @@
+"""Handle system commands & packages."""
+
 commands: list[str] = []
 packages: list[str] = []
 
 
 def need(command: str) -> None:
+    """Assert package dependency for a command."""
     match command:
         case "debootstrap":
             package = "debootstrap"