From db9e47628805a7e03bd49bb49ddc3df964dcb57e Mon Sep 17 00:00:00 2001
From: Adam Turner <9087854+AA-Turner@users.noreply.github.com>
Date: Mon, 8 Jan 2024 19:49:04 +0000
Subject: [PATCH] Increase the minimum supported version of Alabaster to 0.7.14
 (#11858)

---
 pyproject.toml                   |  2 +-
 sphinx/builders/html/__init__.py | 18 ++----------------
 tests/test_theming.py            |  9 +--------
 3 files changed, 4 insertions(+), 25 deletions(-)

diff --git a/pyproject.toml b/pyproject.toml
index 699ee0136..ae671bb54 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -67,7 +67,7 @@ dependencies = [
     "docutils>=0.18.1,<0.21",
     "snowballstemmer>=2.0",
     "babel>=2.9",
-    "alabaster>=0.7,<0.8",
+    "alabaster~=0.7.14",
     "imagesize>=1.3",
     "requests>=2.25.0",
     "packaging>=21.0",
diff --git a/sphinx/builders/html/__init__.py b/sphinx/builders/html/__init__.py
index 4b592efef..0f3cccb34 100644
--- a/sphinx/builders/html/__init__.py
+++ b/sphinx/builders/html/__init__.py
@@ -961,22 +961,8 @@ class StandaloneHTMLBuilder(Builder):
         customsidebar = None
 
         # default sidebars settings for selected theme
-        if self.theme.name == 'alabaster':
-            # provide default settings for alabaster (for compatibility)
-            # Note: this will be removed before Sphinx-2.0
-            try:
-                # get default sidebars settings from alabaster (if defined)
-                theme_default_sidebars = self.theme.config.get('theme', 'sidebars')
-                if theme_default_sidebars:
-                    sidebars = [name.strip() for name in theme_default_sidebars.split(',')]
-            except Exception:
-                # fallback to better default settings
-                sidebars = ['about.html', 'navigation.html', 'relations.html',
-                            'searchbox.html', 'donate.html']
-        else:
-            theme_default_sidebars = self.theme.get_config('theme', 'sidebars', None)
-            if theme_default_sidebars:
-                sidebars = [name.strip() for name in theme_default_sidebars.split(',')]
+        if theme_default_sidebars := self.theme.get_config('theme', 'sidebars', None):
+            sidebars = [name.strip() for name in theme_default_sidebars.split(',')]
 
         # user sidebar settings
         html_sidebars = self.get_builder_config('sidebars', 'html')
diff --git a/tests/test_theming.py b/tests/test_theming.py
index 2dfdd8dee..0544c710c 100644
--- a/tests/test_theming.py
+++ b/tests/test_theming.py
@@ -2,7 +2,6 @@
 
 import os
 
-import alabaster
 import pytest
 
 import sphinx.builders.html
@@ -18,13 +17,7 @@ def test_theme_api(app, status, warning):
 
     themes = ['basic', 'default', 'scrolls', 'agogo', 'sphinxdoc', 'haiku',
               'traditional', 'epub', 'nature', 'pyramid', 'bizstyle', 'classic', 'nonav',
-              'test-theme', 'ziptheme', 'staticfiles', 'parent', 'child']
-    try:
-        alabaster_version = alabaster.__version_info__
-    except AttributeError:
-        alabaster_version = alabaster.version.__version_info__
-    if alabaster_version >= (0, 7, 11):
-        themes.append('alabaster')
+              'test-theme', 'ziptheme', 'staticfiles', 'parent', 'child', 'alabaster']
 
     # test Theme class API
     assert set(app.registry.html_themes.keys()) == set(themes)