Merge pull request #2655 from pre-commit/drop-py37

drop python<3.8

.pre-commit-config.yaml

@@ -18,7 +18,7 @@ repos:
     hooks:
     -   id: reorder-python-imports
         exclude: ^(pre_commit/resources/|testing/resources/python3_hooks_repo/)
-        args: [--py37-plus, --add-import, 'from __future__ import annotations']
+        args: [--py38-plus, --add-import, 'from __future__ import annotations']
 -   repo: https://github.com/asottile/add-trailing-comma
     rev: v2.4.0
     hooks:
@@ -28,7 +28,7 @@ repos:
     rev: v3.3.1
     hooks:
     -   id: pyupgrade
-        args: [--py37-plus]
+        args: [--py38-plus]
 -   repo: https://github.com/pre-commit/mirrors-autopep8
     rev: v2.0.1
     hooks:

azure-pipelines.yml

@@ -15,7 +15,7 @@ resources:
 jobs:
 - template: job--python-tox.yml@asottile
   parameters:
-    toxenvs: [py37]
+    toxenvs: [py38]
     os: windows
     additional_variables:
       TEMP: C:\Temp
@@ -34,7 +34,7 @@ jobs:
       displayName: install R
 - template: job--python-tox.yml@asottile
   parameters:
-    toxenvs: [py37]
+    toxenvs: [py38]
     os: linux
     name_postfix: _latest_git
     pre_test:
@@ -52,7 +52,7 @@ jobs:
       displayName: install R
 - template: job--python-tox.yml@asottile
   parameters:
-    toxenvs: [py37, py38, py39]
+    toxenvs: [py38, py39, py310]
     os: linux
     pre_test:
     - task: UseRubyVersion@0

pre_commit/constants.py

@@ -1,11 +1,6 @@
 from __future__ import annotations
 
-import sys
-
-if sys.version_info >= (3, 8):  # pragma: >=3.8 cover
-    import importlib.metadata as importlib_metadata
-else:  # pragma: <3.8 cover
-    import importlib_metadata
+import importlib.metadata
 
 CONFIG_FILE = '.pre-commit-config.yaml'
 MANIFEST_FILE = '.pre-commit-hooks.yaml'
@@ -15,7 +10,7 @@ INSTALLED_STATE_VERSION = '1'
 # Bump when modifying `empty_template`
 LOCAL_REPO_VERSION = '1'
 
-VERSION = importlib_metadata.version('pre_commit')
+VERSION = importlib.metadata.version('pre_commit')
 
 # `manual` is not invoked by any installed git hook.  See #719
 STAGES = (

setup.cfg

@@ -24,8 +24,7 @@ install_requires =
     nodeenv>=0.11.1
     pyyaml>=5.1
     virtualenv>=20.10.0
-    importlib-metadata;python_version<"3.8"
-python_requires = >=3.7
+python_requires = >=3.8
 
 [options.packages.find]
 exclude =

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py37,py38,pypy3,pre-commit
+envlist = py,pypy3,pre-commit
 
 [testenv]
 deps = -rrequirements-dev.txt