maybe

envolved/parsers.py

@@ -20,21 +20,9 @@
     Union,
 )
 
-from envolved.utils import extract_from_option
-
-try:
-    from typing import TypeAlias
-except ImportError:
-    from typing_extensions import TypeAlias
+from typing_extensions import Concatenate, TypeAlias
 
-try:
-    from typing import (
-        Concatenate,
-    )
-except ImportError:
-    # typing-extensions won't help us here: https://github.com/python/typing_extensions/issues/48
-    # Concatenate in only available in python 3.10+, before that, there is no way to type hint a callable with any number of arguments
-    Concatenate = None  # type: ignore[assignment]
+from envolved.utils import extract_from_option
 
 __all__ = ["Parser", "BoolParser", "CollectionParser", "parser"]
 
@@ -55,11 +43,8 @@
 
 T = TypeVar("T")
 
-if Concatenate:
-    # theoretically, I'd like to restrict this to keyword arguments only, but that's not possible yet in python
-    Parser: TypeAlias = Callable[Concatenate[str, ...], T]
-else:
-    Parser = Callable[[str], T]  # type: ignore[misc, no-redef]
+# theoretically, I'd like to restrict this to keyword arguments only, but that's not possible yet in python
+Parser: TypeAlias = Callable[Concatenate[str, ...], T]
 
 ParserInput = Union[Parser[T], Type[T]]