diff --git a/chroot/__init__.py b/chroot/__init__.py
index 2ba24da..fd29de4 100644
--- a/chroot/__init__.py
+++ b/chroot/__init__.py
@@ -5,7 +5,8 @@ import os
 from config import config
 from wrapper import enforce_wrap
 
-from .base import get_base_chroot, Chroot, BaseChroot
+from .abstract import Chroot
+from .base import get_base_chroot
 from .build import get_build_chroot, BuildChroot
 #from .device import get_device_chroot, DeviceChroot
 from .helpers import get_chroot_path
diff --git a/chroot/abstract.py b/chroot/abstract.py
index bcc7b9b..2b9ef54 100644
--- a/chroot/abstract.py
+++ b/chroot/abstract.py
@@ -221,7 +221,6 @@ class Chroot(AbstractChroot):
         if outer_env is None:
             outer_env = os.environ.copy()
         env_cmd = ['/usr/bin/env'] + [f'{shell_quote(key)}={shell_quote(value)}' for key, value in inner_env.items()]
-        run_func = subprocess.call if attach_tty else subprocess.run
         kwargs: dict = {
             'env': outer_env,
         }
diff --git a/chroot/helpers.py b/chroot/helpers.py
index 1b223b2..9da0973 100644
--- a/chroot/helpers.py
+++ b/chroot/helpers.py
@@ -1,5 +1,5 @@
 import os
-from typing import Union, Optional, TypedDict
+from typing import Optional, TypedDict
 
 from config import config
 from constants import Arch