Minor restructure of which html sphinx builder we build in the tox.ini.

Author: Julian

.github/workflows/ci.yml

@@ -66,7 +66,7 @@ jobs:
           - name: 3.9
             toxenv: py39-format_nongpl-tests
           - name: 3.9
-            toxenv: docs-html
+            toxenv: docs-dirhtml
           - name: 3.9
             toxenv: docs-doctest
           - name: 3.9

tox.ini

@@ -90,29 +90,22 @@ deps =
 commands =
     {envpython} -m flake8 {posargs} {toxinidir}/jsonschema {toxinidir}/docs
 
-[testenv:docs-html]
-commands = {envpython} -m sphinx -b html {toxinidir}/docs/ {envtmpdir}/build {posargs:-a -n -q -T -W}
+[testenv:docs-dirhtml]
+commands = {envpython} -m sphinx -b dirhtml {toxinidir}/docs/ {envtmpdir}/build {posargs:-a -n -q -T -W}
 deps =
     -r{toxinidir}/docs/requirements.txt
-    {toxinidir}
 
 [testenv:docs-doctest]
 commands = {envpython} -m sphinx -b doctest {toxinidir}/docs/ {envtmpdir}/build {posargs:-a -n -q -T -W}
-deps =
-    -r{toxinidir}/docs/requirements.txt
-    {toxinidir}
+deps = {[testenv:docs-dirhtml]deps}
 
 [testenv:docs-linkcheck]
 commands = {envpython} -m sphinx -b linkcheck {toxinidir}/docs/ {envtmpdir}/build {posargs:-a -n -q -T -W}
-deps =
-    -r{toxinidir}/docs/requirements.txt
-    {toxinidir}
+deps = {[testenv:docs-dirhtml]deps}
 
 [testenv:docs-spelling]
 commands = {envpython} -m sphinx -b spelling {toxinidir}/docs/ {envtmpdir}/build {posargs:-a -n -T -W}
-deps =
-    -r{toxinidir}/docs/requirements.txt
-    {toxinidir}
+deps = {[testenv:docs-dirhtml]deps}
 
 [testenv:docs-style]
 commands = doc8 {posargs} {toxinidir}/docs