1 files changed, 1 insertions, 34 deletions
diff --git a/pre_commit/util.py b/pre_commit/util.py
index b850768..8ea4844 100644
--- a/pre_commit/util.py
+++ b/pre_commit/util.py
@@ -2,36 +2,20 @@ from __future__ import annotations
 
 import contextlib
 import errno
-import functools
 import importlib.resources
 import os.path
 import shutil
 import stat
 import subprocess
 import sys
-import tempfile
 from types import TracebackType
 from typing import Any
 from typing import Callable
 from typing import Generator
 from typing import IO
 
-import yaml
-
 from pre_commit import parse_shebang
 
-Loader = getattr(yaml, 'CSafeLoader', yaml.SafeLoader)
-yaml_load = functools.partial(yaml.load, Loader=Loader)
-Dumper = getattr(yaml, 'CSafeDumper', yaml.SafeDumper)
-
-
-def yaml_dump(o: Any, **kwargs: Any) -> str:
-    # when python/mypy#1484 is solved, this can be `functools.partial`
-    return yaml.dump(
-        o, Dumper=Dumper, default_flow_style=False, indent=4, sort_keys=False,
-        **kwargs,
-    )
-
 
 def force_bytes(exc: Any) -> bytes:
     with contextlib.suppress(TypeError):
@@ -52,18 +36,6 @@ def clean_path_on_failure(path: str) -> Generator[None, None, None]:
         raise
 
 
-@contextlib.contextmanager
-def tmpdir() -> Generator[str, None, None]:
-    """Contextmanager to create a temporary directory.  It will be cleaned up
-    afterwards.
-    """
-    tempdir = tempfile.mkdtemp()
-    try:
-        yield tempdir
-    finally:
-        rmtree(tempdir)
-
-
 def resource_bytesio(filename: str) -> IO[bytes]:
     return importlib.resources.open_binary('pre_commit.resources', filename)
 
@@ -127,7 +99,7 @@ def cmd_output_b(
     _setdefault_kwargs(kwargs)
 
     try:
-        cmd = parse_shebang.normalize_cmd(cmd)
+        cmd = parse_shebang.normalize_cmd(cmd, env=kwargs.get('env'))
     except parse_shebang.ExecutableNotFoundError as e:
         returncode, stdout_b, stderr_b = e.to_output()
     else:
@@ -254,10 +226,5 @@ def rmtree(path: str) -> None:
     shutil.rmtree(path, ignore_errors=False, onerror=handle_remove_readonly)
 
 
-def parse_version(s: str) -> tuple[int, ...]:
-    """poor man's version comparison"""
-    return tuple(int(p) for p in s.split('.'))
-
-
 def win_exe(s: str) -> str:
     return s if sys.platform != 'win32' else f'{s}.exe'