Fix `--help-variables` docs.
The work to fix in introduced DefaultedProperty but failed
to account for these when generating PEX_ environment variable help.
@@ -147,6 +147,7 @@ class Variables(object):
for variable_name, value in sorted(cls.__dict__.items()):
if not variable_name.startswith("PEX_"):
continue
+ value = value._func if isinstance(value, DefaultedProperty) else value
variable_type, variable_text = cls.process_pydoc(getattr(value, "__doc__"))
yield variable_name, variable_type, variable_text
