Updated CLI documentation with config file name (pypa#2602)

nathanczh · nchanwork · web-flow · commit 55b2401133f0 · 2023-07-10T07:20:17.000-07:00
Co-authored-by: Nathan Chan &lt;nathan.chan@capitalone.com&gt;
diff --git a/docs/cli_interface.rst b/docs/cli_interface.rst
@@ -32,9 +32,10 @@ Defaults
 Configuration file
 ^^^^^^^^^^^^^^^^^^
 
-virtualenv looks for a standard ini configuration file. The exact location depends on the operating system you're using,
-as determined by :pypi:`platformdirs` application configuration definition. The configuration file location is printed as at
-the end of the output when ``--help`` is passed.
+Unless ``VIRTUALENV_CONFIG_FILE`` is set, virtualenv looks for a standard ``virtualenv.ini`` configuration file.
+The exact location depends on the operating system you're using, as determined by :pypi:`platformdirs` application
+configuration definition. It can be overridden by setting the ``VIRTUALENV_CONFIG_FILE`` environment variable.
+The configuration file location is printed as at the end of the output when ``--help`` is passed.
 
 The keys of the settings are derived from the command line option (left strip the ``-`` characters, and replace ``-``
 with ``_``). Where multiple flags are available first found wins (where order is as it shows up under the ``--help``).
