move Hook data type to a separate file

pre_commit/languages/rust.py

@@ -4,7 +4,6 @@ from typing import Generator
 from typing import Sequence
 from typing import Set
 from typing import Tuple
-from typing import TYPE_CHECKING
 
 import toml
 
@@ -12,14 +11,12 @@ import pre_commit.constants as C
 from pre_commit.envcontext import envcontext
 from pre_commit.envcontext import PatchesT
 from pre_commit.envcontext import Var
+from pre_commit.hook import Hook
 from pre_commit.languages import helpers
 from pre_commit.prefix import Prefix
 from pre_commit.util import clean_path_on_failure
 from pre_commit.util import cmd_output_b
 
-if TYPE_CHECKING:
-    from pre_commit.repository import Hook
-
 ENVIRONMENT_DIR = 'rustenv'
 get_default_version = helpers.basic_get_default_version
 healthy = helpers.basic_healthy