MAINT: dropping sphinx<7 and python<3.11 support

Author: bsipocz

docs/contributing/tests.md

@@ -14,8 +14,8 @@ $ tox
 You can specify a specific environment like so:
 
 ```console
-# Run the tests with Python 3.10, Sphinx 6
-$ tox -e py310-sphinx6
+# Run the tests with Python 3.12, Sphinx 8
+$ tox -e py312-sphinx8
 ```
 
 ## List all test environments
@@ -46,7 +46,7 @@ By default, `tox` will only install the necessary environment **once**.
 If you'd like to force a re-build, use the `-r` parameter. For example:
 
 ```console
-$ tox -r -e py310-sphinx6
+$ tox -r -e py312-sphinx8
 ```
 
 ## Test audits with lighthouse
@@ -63,7 +63,7 @@ To preview the output of these tests:
 
 ## Test multiple Sphinx versions
 
-This theme is tested against Sphinx 6-9.
+This theme is tested against Sphinx 7-9.
 We try to set up our regression tests such that there are no differences between these Sphinx versions.
 
 ### Unit tests

pyproject.toml

@@ -37,9 +37,9 @@ description = "A clean book theme for scientific explanations and documentation
 dynamic = ["version"]
 readme = "README.md"
 
-requires-python = ">=3.9"
+requires-python = ">=3.11"
 dependencies = [
-  "sphinx>=6.1",
+  "sphinx>=7.0",
   "pydata-sphinx-theme==0.16.1"
 ]
 

tests/test_build.py

@@ -9,13 +9,8 @@
 import sphinx
 from sphinx.testing.util import SphinxTestApp
 
-sphinx_version = parse(version("sphinx"))
-if sphinx_version.major < 7:
-    from sphinx.testing.path import path as sphinx_path
-else:
-    from pathlib import Path as sphinx_path
-
 
+sphinx_version = parse(version("sphinx"))
 path_tests = Path(__file__).parent
 
 
@@ -56,7 +51,7 @@ def html_tree(self, *path):
 def sphinx_build_factory(make_app, tmp_path):
     def _func(src_folder, **kwargs):
         copytree(path_tests / "sites" / src_folder, tmp_path / src_folder)
-        app = make_app(srcdir=sphinx_path(tmp_path / src_folder), **kwargs)
+        app = make_app(srcdir=Path(tmp_path / src_folder), **kwargs)
         return SphinxBuild(app, tmp_path / src_folder)
 
     yield _func
@@ -469,7 +464,7 @@ def test_sidenote(sphinx_build_factory, file_regression):
     page2 = sphinx_build.html_tree("page2.html")
 
     sidenote_html = page2.select("section > #sidenotes")
-    regression_file = "test_sidenote_6" if sphinx_version.major < 7 else "test_sidenote"
+    regression_file = "test_sidenote"
     file_regression.check(
         sidenote_html[0].prettify(),
         extension=".html",
@@ -487,9 +482,8 @@ def test_marginnote(sphinx_build_factory, file_regression):
     page2 = sphinx_build.html_tree("page2.html")
 
     marginnote_html = page2.select("section > #marginnotes")
-    regression_file = (
-        "test_marginnote_6" if sphinx_version.major < 7 else "test_marginnote"
-    )
+    regression_file = "test_marginnote"
+
     file_regression.check(
         marginnote_html[0].prettify(),
         extension=".html",