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-rw-r--r--src/tox/tox_env/python/package.py4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/tox/tox_env/python/package.py b/src/tox/tox_env/python/package.py
index 343b226c..eed39a7e 100644
--- a/src/tox/tox_env/python/package.py
+++ b/src/tox/tox_env/python/package.py
@@ -3,7 +3,7 @@ A tox build environment that handles Python packages.
"""
import sys
from abc import ABC, abstractmethod
-from typing import List, NoReturn, Union
+from typing import List, NoReturn, Optional, Union
from packaging.requirements import Requirement
@@ -37,5 +37,5 @@ class PythonPackage(Python, PackageToxEnv, ABC):
def build_requires(self) -> List[Requirement]:
raise NotImplementedError
- def default_base_python(self, conf: Config, env_name: str) -> List[str]:
+ def default_base_python(self, conf: Config, env_name: Optional[str]) -> List[str]:
return [sys.executable]