Run sphinx-autobuild via tox -e docs-live[-src]

changes/2400.misc.rst

@@ -0,0 +1 @@
+The ``sphinx-autobuild`` tool can now be invoked via ``tox -e docs-live`` and ``tox -e docs-live-src``.

tox.ini

@@ -38,18 +38,16 @@ commands =
 
 [docs]
 build_dir = _build
-# -W: make warnings into errors
-# --keep-going: continue on errors
-# -j: run with multiple processes
-sphinx_args = -W --keep-going -j auto
-# -v: verbose logging
-# -E: force rebuild of environment
-# -T: print traceback on error
-# -a: read/parse all files
-# -d: use tox's temp dir for caching
-sphinx_args_extra = {[docs]sphinx_args} -v -E -T -a -d {envtmpdir}/doctrees
+# replace when Sphinx>=7.3 and Python 3.8 is dropped:
+#  -T -> --show-traceback
+#  -W -> --fail-on-warning
+#  -b -> --builder
+#  -v -> --verbose
+#  -a -> --write-all
+#  -E -> --fresh-env
+sphinx_args = -T -W --keep-going --jobs auto
 
-[testenv:docs{,-lint,-all}]
+[testenv:docs{,-lint,-all,-live,-live-src}]
 skip_install = True
 change_dir = docs
 deps =
@@ -60,10 +58,12 @@ passenv =
     #     export PYENCHANT_LIBRARY_PATH=/opt/homebrew/lib/libenchant-2.2.dylib
     PYENCHANT_LIBRARY_PATH
 commands =
-    !lint-!all : python -m sphinx {[docs]sphinx_args} -b html . {[docs]build_dir}/html
-    lint : python -m sphinx {[docs]sphinx_args_extra} -b spelling . {[docs]build_dir}/spell
-    lint : python -m sphinx {[docs]sphinx_args_extra} -b linkcheck . {[docs]build_dir}/links
-    all  : python -m sphinx {[docs]sphinx_args_extra} -b html . {[docs]build_dir}/html
+    !lint-!all-!live : python -m sphinx {[docs]sphinx_args} {posargs} -b html . {[docs]build_dir}/html
+    lint : python -m sphinx {[docs]sphinx_args} {posargs} -b spelling . {[docs]build_dir}/spell
+    lint : python -m sphinx {[docs]sphinx_args} {posargs} -b linkcheck . {[docs]build_dir}/links
+    all  : python -m sphinx {[docs]sphinx_args} {posargs} -v -a -E -b html . {[docs]build_dir}/html
+    live-!src : sphinx-autobuild {[docs]sphinx_args} {posargs} -b html . {[docs]build_dir}/live
+    live-src  : sphinx-autobuild {[docs]sphinx_args} {posargs} -a --watch ../core/src/toga/ -b html . {[docs]build_dir}/live
 
 [testenv:package]
 skip_install = True