Drop support for Python 3.7

.github/workflows/tests.yaml

@@ -33,7 +33,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12-dev']
+        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12-dev']
         os: [ubuntu-latest, macos-latest, windows-latest]
     continue-on-error: ${{ matrix.python-version == '3.12-dev' }}
 
@@ -74,7 +74,7 @@ jobs:
     - uses: actions/checkout@v3
     - uses: actions/setup-python@v3
       with:
-        python-version: '3.7'
+        python-version: '3.8'
     - name: Install build and publish tools
       run: |
         pip install build twine

.readthedocs.yaml

@@ -11,6 +11,6 @@ sphinx:
 
 # Optionally set the version of Python and requirements required to build your docs
 python:
-   version: '3.7'
+   version: '3.8'
    install:
    - requirements: docs/requirements.txt

pyproject.toml

@@ -11,12 +11,11 @@ authors = [
     { name = "Taneli Hukkinen", email = "hukkin@users.noreply.github.com" },
 ]
 license = { file = "LICENSE" }
-requires-python = ">=3.7"
+requires-python = ">=3.8"
 dependencies = [
-    'tomli >=1.1.0; python_version < "3.11"',
     'markdown-it-py >=1.0.0,<4.0.0',
+    'tomli >=1.1.0; python_version < "3.11"',
     'importlib-metadata >=3.6.0; python_version < "3.10"',
-    'typing-extensions >=3.7.4; python_version < "3.8"',
 ]
 readme = "README.md"
 classifiers = [
@@ -64,10 +63,10 @@ xfail_strict = true
 legacy_tox_ini = '''
 [tox]
 # Only run pytest envs when no args given to tox
-envlist = py{37,38,39,310}
+envlist = py{38,39,310,311}
 isolated_build = True
 
-[testenv:py{37,38,39,310}]
+[testenv:py{38,39,310,311}]
 description = run tests
 deps =
     -r tests/requirements.txt

src/mdformat/_compat.py

@@ -1,4 +1,4 @@
-__all__ = ("importlib_metadata", "Protocol", "Literal", "tomllib")
+__all__ = ("importlib_metadata", "tomllib")
 
 import sys
 
@@ -11,8 +11,3 @@
     from importlib import metadata as importlib_metadata
 else:  # pragma: no cover
     import importlib_metadata
-
-if sys.version_info >= (3, 8):  # pragma: no cover
-    from typing import Literal, Protocol
-else:  # pragma: no cover
-    from typing_extensions import Literal, Protocol

src/mdformat/_util.py

@@ -8,12 +8,11 @@
 import re
 import tempfile
 from types import MappingProxyType
-from typing import Any
+from typing import Any, Literal
 
 from markdown_it import MarkdownIt
 from markdown_it.renderer import RendererHTML
 
-from mdformat._compat import Literal
 import mdformat.plugins
 
 NULL_CTX = nullcontext()

src/mdformat/plugins.py

@@ -2,10 +2,11 @@
 
 import argparse
 from collections.abc import Callable, Mapping
+from typing import Protocol
 
 from markdown_it import MarkdownIt
 
-from mdformat._compat import Protocol, importlib_metadata
+from mdformat._compat import importlib_metadata
 from mdformat.renderer.typing import Postprocess, Render
 
 

src/mdformat/renderer/_context.py

@@ -7,12 +7,11 @@
 import re
 import textwrap
 from types import MappingProxyType
-from typing import TYPE_CHECKING, Any, NamedTuple
+from typing import TYPE_CHECKING, Any, Literal, NamedTuple
 
 from markdown_it.rules_block.html_block import HTML_SEQUENCES
 
 from mdformat import codepoints
-from mdformat._compat import Literal
 from mdformat._conf import DEFAULT_OPTS
 from mdformat.renderer._util import (
     RE_CHAR_REFERENCE,