Create action to validate docs

.github/workflows/docs.yml

@@ -0,0 +1,23 @@
+name: Validate docs
+
+on:
+  push:
+    paths:
+      - 'docs/**'
+
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: "3.11"
+      
+      - name: Install build dependencies
+        run: pip install -r docs/requirements.txt
+      - name: Rendering HTML documentation
+        run: sphinx-build -b html docs/ html
+      - name: Inspect html rendered
+        run: cat html/index.html

docs/installation.rst

@@ -18,7 +18,7 @@ The following HTTP libraries are supported:
 -  ``boto3``
 -  ``http.client``
 -  ``httplib2``
--  ``requests`` (both 1.x and 2.x versions)
+-  ``requests`` (>=2.16.2 versions)
 -  ``tornado.httpclient``
 -  ``urllib2``
 -  ``urllib3``

setup.py

@@ -63,7 +63,7 @@ tests_require = [
     "pytest",
     "pytest-aiohttp",
     "pytest-httpbin",
-    "requests",
+    "requests>=2.16.2",
     "tornado",
     # Needed to un-break httpbin 0.7.0. For httpbin >=0.7.1 and after,
     # this pin and the dependency itself can be removed, provided

tox.ini

@@ -44,27 +44,6 @@ deps =
   ruff
 basepython = python3.10
 
-[testenv:docs]
-# Running sphinx from inside the "docs" directory
-# ensures it will not pick up any stray files that might
-# get into a virtual environment under the top-level directory
-# or other artifacts under build/
-changedir = docs
-# The only dependency is sphinx
-# If we were using extensions packaged separately,
-# we would specify them here.
-# A better practice is to specify a specific version of sphinx.
-deps =
-    sphinx
-    sphinx_rtd_theme
-# This is the sphinx command to generate HTML.
-# In other circumstances, we might want to generate a PDF or an ebook
-commands =
-    sphinx-build -W -b html -d {envtmpdir}/doctrees . {envtmpdir}/html
-# We use Python 3.8. Tox sometimes tries to autodetect it based on the name of
-# the testenv, but "docs" does not give useful clues so we have to be explicit.
-basepython = python3.8
-
 [testenv]
 # Need to use develop install so that paths
 # for aggregate code coverage combine