Update documentation deps

doc/_templates/layout.html

@@ -4,6 +4,7 @@
 <meta name="description" content="Small, safe and fast formatting library">
 <meta name="keywords" content="C++, formatting, printf, string, library">
 <meta name="author" content="Victor Zverovich">
+<link href="bootstrap.min.css" rel="stylesheet">
 <link rel="stylesheet" href="_static/fmt.css">
 {# Google Analytics #}
 <script async src="https://www.googletagmanager.com/gtag/js?id=UA-20116650-4"></script>
@@ -32,7 +33,7 @@
 {%- endmacro %}
 
 {% block header %}
-<nav class="navbar navbar-inverse">
+<nav class="navbar navbar-expand-lg" data-bs-theme="dark">
   <div class="tb-container">
     <div class="row">
       <div class="navbar-content">
@@ -84,20 +85,20 @@
   <div class="tb-container">
     <h1>{fmt}</h1>
     <p class="lead">A modern formatting library</p>
-    <div class="btn-group" role="group">
+    <div class="btn-group">
       {% set name = 'fmt' if version.split('.')[0]|int >= 3 else 'cppformat' %}
       <a class="btn btn-success"
          href="{{download_url}}/{{version}}/{{name}}-{{version}}.zip">
            <span class="glyphicon glyphicon-download"></span> Download
       </a>
-      <button type="button" class="btn btn-success dropdown-toggle"
+      <button type="button" class="btn btn-success dropdown-toggle dropdown-toggle-split" data-bs-toggle="dropdown" aria-expanded="false">
-        data-toggle="dropdown"><span class="caret"></span></button>
+        <span class="visually-hidden">▼</span>
+      </button>
       <ul class="dropdown-menu">
-      {% for v in versions.split(',') %}
+        {% for v in versions.split(',') %}
-      {% set name = 'fmt' if v.split('.')[0]|int >= 3 else 'cppformat' %}
+        {% set name = 'fmt' if v.split('.')[0]|int >= 3 else 'cppformat' %}
-        <li><a href="{{download_url}}/{{v}}/{{name}}-{{v}}.zip">Version {{v}}
+          <li><a class="dropdown-item" href="{{download_url}}/{{v}}/{{name}}-{{v}}.zip">Version {{v}}</a></li>
-          </a></li>
+        {% endfor %}
-      {% endfor %}
       </ul>
     </div>
   </div>
@@ -144,5 +145,6 @@
 {% block footer %}
 {{ super() }}
 {# Placed at the end of the document so the pages load faster. #}
+<script src="_static/popper.min.js"></script>
 <script src="_static/bootstrap.min.js"></script>
 {% endblock %}

doc/build.py

@@ -33,11 +33,9 @@ def create_build_env(venv_dir='virtualenv'):
   pip.install('six')
   # See: https://github.com/sphinx-doc/sphinx/issues/9777
   pip.install('docutils==0.17.1')
-  # Jinja2 >= 3.1 incompatible with sphinx 3.3.0
+  pip.install('Jinja2')
-  # See: https://github.com/sphinx-doc/sphinx/issues/10291
+  pip.install('sphinx==5.0.2')
-  pip.install('Jinja2<3.1')
+  pip.install('michaeljones/breathe', 'v4.35.0')
-  pip.install('sphinx==3.3.0')
-  pip.install('michaeljones/breathe', 'v4.25.0')
 
 def build_docs(version='dev', **kwargs):
   doc_dir = kwargs.get('doc_dir', os.path.dirname(os.path.realpath(__file__)))