CI: avoid windows error by relying on available pip; print out instal…

…led versions to help future debugging

.github/workflows/tests.yml

@@ -61,12 +61,12 @@ jobs:
     - name: Install myst-nb with Sphinx ${{ matrix.sphinx }}
       shell: bash
       run: |
-        pip install --upgrade pip
         # Temporary: for python 3.13 we need the nightly pyarrow wheels
         if [[ ${{ matrix.python-version }} == '3.13' ]] ; then
           PIP_EXTRA_INDEX_URL=https://pypi.anaconda.org/scientific-python-nightly-wheels/simple pip install --pre pyarrow
         fi
         pip install --upgrade "Sphinx${{ matrix.sphinx }}" "myst-parser${{ matrix.myst-parser }}" -e .[testing]
+        pip freeze
 
     - name: Run pytest
       run: pytest --durations=10
@@ -84,8 +84,8 @@ jobs:
         cache: pip
     - name: Install dependencies
       run: |
-        pip install --upgrade pip
         pip install -e .[testing]
+        pip freeze
 
     - name: Run pytest
       run: pytest --durations=10 --cov=myst_nb --cov-report=xml --cov-report=term-missing

tox.ini

@@ -35,6 +35,7 @@ allowlist_externals =
     echo
     rm
 commands =
+    pip freeze
     clean: rm -rf docs/_build
     sphinx-build {posargs} -nW --keep-going -b {env:BUILDER} docs/ docs/_build/{env:BUILDER}
 commands_post = echo "open file://{toxinidir}/docs/_build/{env:BUILDER}/index.html"