Drop 3.7 support (#28)

* drop 3.7 support

* update deps and tox

* update docs

.github/workflows/tox.yml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       matrix:
         platform: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
 
     steps:
       - uses: actions/checkout@v4

README.md

@@ -5,7 +5,7 @@
 The goal of this project is to manage configuration for python tools, such as
 rope and add support for a pyproject.toml configuration file.
 [Documentation](https://pytoolconfig.readthedocs.io/en/latest/) This library
-only supports python 3.7 to 3.11. 3.12 plus may work, but isn't tested.
+only supports python 3.8 to 3.12. 3.13+ may work, but isn't tested.
 
 ## Development
 

pyproject.toml

@@ -3,12 +3,8 @@ name = "pytoolconfig"
 dynamic = ["version"]
 description = 'Python tool configuration'
 license = { text = 'LGPL-3.0-or-later' }
-dependencies = [
-  "tomli>=2.0.1; python_version < \"3.11\"",
-  "packaging>=22.0",
-  "typing-extensions>=4.4.0; python_version < \"3.8\"",
-]
-requires-python = '>=3.7'
+dependencies = ["tomli>=2.0.1; python_version < \"3.11\"", "packaging>=22.0"]
+requires-python = '>=3.8'
 readme = "README.md"
 
 [[project.authors]]
@@ -70,8 +66,8 @@ ignore = [
   "SLF001",
   "FA100",
 ]
-# Always generate Python 3.7-compatible code.
-target-version = "py37"
+# Always generate Python 3.8-compatible code.
+target-version = "py38"
 force-exclude = true
 [tool.ruff.per-file-ignores]
 "tests/**" = ["D", "ANN201", "ANN001"]
@@ -83,20 +79,19 @@ extend-immutable-calls = ["pytoolconfig.field"]
 [tool.tox]
 legacy_tox_ini = '''
 [tox]
-envlist = py37,py38, py39, py310, py311, py312
+min_version = 4.0
+envlist = py38, py39, py310, py311, py312
 isolated_build = True
 
 [gh-actions]
 python =
-    3.7: py37
     3.8: py38
     3.9: py39
     3.10: py310
     3.11: py311
     3.12: py312
 [testenv]
-extras = doc, global
-groups = dev
+groups = dev, doc, global
 commands = pytest
 '''
 [tool.pylint.format]

src/pytoolconfig/documentation.py

@@ -3,7 +3,6 @@
 
 from __future__ import annotations
 
-import sys
 from dataclasses import is_dataclass
 from typing import TYPE_CHECKING, Any, Generator
 
@@ -15,18 +14,15 @@
     from .pytoolconfig import PyToolConfig
     from .types import ConfigField
 
+from typing import get_origin
+
 from sphinx.ext.autodoc import ClassDocumenter
 from tabulate import tabulate
 
 from .fields import _gather_config_fields
 from .sources import Source
 from .universal_config import UniversalConfig
 
-if sys.version_info < (3, 8, 0):
-    from typing_extensions import get_origin
-else:
-    from typing import get_origin
-
 
 def _type_to_str(type_to_print: type[Any]) -> str | None:
     if type_to_print is None: