Merge pull request #16657 from mppf/fix-too-long-sphinxbuild
Fix problem with sphinx-building having too-long shebang
We were seeing test failures with
make docs due to the
in the venv having a shebang that is too long.
So, run it with
python3 path/to/sphinx-build. A reasonable alternative
would be to run
third-party/chpl-venv/venv-use-sys-python.py all the
time instead of in certain configurations.
While there, this PR improves the checking for a
sphinx-build to check
sphinx-build --version works.