fix win tmp

Author: jonashaag

.github/actions/build_pandas/action.yml

@@ -14,13 +14,23 @@ runs:
         python --version
       shell: bash -el {0}
 
+    - name: Fix Windows temporary directory
+      # On Windows, for some reason the default temporary directory used by distutils
+      # may become read-only at some point. Work around by having a private tempdir.
+      id: mktemp
+      run: echo "::set-output name=tmpdir::$(cygpath -w $(mktemp -d))"
+      shell: bash
+      if: ${{ runner.os == 'Windows' }}
+
     - name: Build Pandas
       run: |
         which python
         which pip
         time python setup.py build_ext -v -j 3
         pip install -v -e . --no-build-isolation --no-use-pep517 --no-index
       shell: bash -el {0}
+      env:
+        TMP: "${{ steps.mktemp.outputs.tmpdir }}"
 
     - name: Build Version
       run: pushd /tmp && python -c "import pandas; pandas.show_versions();" && popd