pip cache dir

Author: hugovk

.github/workflows/test.yml

@@ -36,3 +36,18 @@ jobs:
         run: |
           python --version
           python test.py
+          python -m pip --version
+
+      - name: pip cache dir
+        run: |
+          python -m pip cache dir
+
+      - name: "Non-Windows: pip cache dir > /dev/null"
+        if: "!startsWith(matrix.os, 'windows')"
+        run: |
+          python -m pip cache dir > /dev/null
+
+      - name: "Windows: pip cache dir > NUL"
+        if: "startsWith(matrix.os, 'windows')"
+        run: |
+          python -m pip cache dir > NUL