Исправлен вызов emerge

pym/update/emerge_parser.py

@@ -117,8 +117,6 @@ class EmergeCommand(CommandExecutor):
                  use=""):
         extra_params = extra_params or []
         if env is None:
-            env = {}
-            env.update(os.environ)
             if emerge_default_opts is None:
                 env = {'CLEAN_DELAY': '0'}
             else:
@@ -130,6 +128,7 @@ class EmergeCommand(CommandExecutor):
                 }
                 if use:
                     env["USE"] = use
+            env.update(os.environ)
         if env_update is not None:
             env.update(env_update)