test: Poetry on Windows

Author: l0b0

.github/workflows/test.yml

@@ -67,6 +67,7 @@ jobs:
         runner:
           - macos-12
           - ubuntu-22.04
+          - windows-2022
         python:
           - "3.8"
           - "3.9"
@@ -76,6 +77,8 @@ jobs:
             pip-cache-dir: ~/Library/Caches/pip
           - runner: ubuntu-22.04
             pip-cache-dir: ~/.cache/pip
+          - runner: windows-2022
+            pip-cache-dir: ~\AppData\Local\pip\Cache
     steps:
       - name: Check out repository
         uses: actions/checkout@v3.3.0
@@ -105,6 +108,7 @@ jobs:
           echo "GDAL_VERSION=$(poetry
           --directory=flooding/sentinel2_water_extraction show gdal | tr -d ' '
           | grep '^version:' | cut -d ':' -f 2)" >> $GITHUB_ENV
+        shell: bash
 
       - name: Setup Conda
         uses: s-weigand/setup-conda@v1.1.1
@@ -117,10 +121,24 @@ jobs:
           conda install --channel=conda-forge --quiet --yes gdal=${{
           env.GDAL_VERSION }} poetry
 
-      - name: Install Python packages
+      - name: Install Python packages on non-Windows runner
         run:
           poetry --directory=flooding/sentinel2_water_extraction install
           --only=main --no-root
+        if: ${{ !startsWith(runner.os, 'Windows') }}
+
+      - name:
+          Install Python packages on Windows runner (remove after
+          https://github.com/python-poetry/poetry-core/pull/460 is released)
+        uses: nick-fields/retry@v2.8.3
+        with:
+          timeout_minutes: 9999 # Work around https://github.com/nick-fields/retry/issues/107
+          max_attempts: 6
+          command:
+            poetry --directory=flooding/sentinel2_water_extraction install
+            --only=main --no-root
+          shell: bash
+        if: ${{ startsWith(runner.os, 'Windows') }}
 
       - name: Run test
         run: