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doc.zih.tu-dresden.de/docs/quickstart/getting_started.md

@@ -386,7 +386,10 @@ For additional information refer to the detailed documentation on [modules](../s
 !!! hint "Tip for Python packages"
 
     The use of [Virtual Environments](../software/python_virtual_environments.md)
-    (best in [workspaces](../data_lifecycle/workspaces.md)) is recommended.
+    (best in [workspaces](../data_lifecycle/workspaces.md)) is required if you want to install
+    additional Python packages with `pip`.
+    When using `pip install` without an activated virtual environment you will get this error:
+    > ERROR: Could not find an activated virtualenv (required).
 
     Please check the module system, even for specific Python packages,
     e.g. `numpy`, `tensorflow` or `pytorch`.