From 9e4dc7f3492ccb4db1dd9e7e4d4584aafde41092 Mon Sep 17 00:00:00 2001
From: Anthony Sottile <asottile@umich.edu>
Date: Wed, 29 Jan 2020 17:40:16 -0800
Subject: [PATCH] Fix pre-commit in python 3.6.0-3.6.1

---
 .pre-commit-config.yaml         | 1 +
 pre_commit/languages/helpers.py | 7 +++++--
 pre_commit/parse_shebang.py     | 7 +++++--
 3 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index e7c441f5..23c19961 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -15,6 +15,7 @@ repos:
     rev: 3.7.9
     hooks:
     -   id: flake8
+        additional_dependencies: [flake8-typing-imports==1.5.0]
 -   repo: https://github.com/pre-commit/mirrors-autopep8
     rev: v1.4.4
     hooks:
diff --git a/pre_commit/languages/helpers.py b/pre_commit/languages/helpers.py
index 3b538291..ba96568c 100644
--- a/pre_commit/languages/helpers.py
+++ b/pre_commit/languages/helpers.py
@@ -3,11 +3,11 @@ import os
 import random
 from typing import Any
 from typing import List
-from typing import NoReturn
 from typing import Optional
 from typing import overload
 from typing import Sequence
 from typing import Tuple
+from typing import TYPE_CHECKING
 
 import pre_commit.constants as C
 from pre_commit.hook import Hook
@@ -15,6 +15,9 @@ from pre_commit.prefix import Prefix
 from pre_commit.util import cmd_output_b
 from pre_commit.xargs import xargs
 
+if TYPE_CHECKING:
+    from typing import NoReturn
+
 FIXED_RANDOM_SEED = 1542676186
 
 
@@ -65,7 +68,7 @@ def no_install(
         prefix: Prefix,
         version: str,
         additional_dependencies: Sequence[str],
-) -> NoReturn:
+) -> 'NoReturn':
     raise AssertionError('This type is not installable')
 
 
diff --git a/pre_commit/parse_shebang.py b/pre_commit/parse_shebang.py
index 3dc8dcae..7b9a0582 100644
--- a/pre_commit/parse_shebang.py
+++ b/pre_commit/parse_shebang.py
@@ -1,11 +1,14 @@
 import os.path
 from typing import Mapping
-from typing import NoReturn
 from typing import Optional
 from typing import Tuple
+from typing import TYPE_CHECKING
 
 from identify.identify import parse_shebang_from_file
 
+if TYPE_CHECKING:
+    from typing import NoReturn
+
 
 class ExecutableNotFoundError(OSError):
     def to_output(self) -> Tuple[int, bytes, None]:
@@ -44,7 +47,7 @@ def find_executable(
 
 
 def normexe(orig: str) -> str:
-    def _error(msg: str) -> NoReturn:
+    def _error(msg: str) -> 'NoReturn':
         raise ExecutableNotFoundError(f'Executable `{orig}` {msg}')
 
     if os.sep not in orig and (not os.altsep or os.altsep not in orig):