CI: install whl on Win

Author: Borda

.github/workflows/ci_pkg-install.yml

@@ -39,9 +39,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-20.04, macOS-10.15]  # , windows-2019
-        python-version: [3.7]
-
+        os: [ubuntu-20.04, macOS-10.15, windows-2019]
+        python-version: [3.8]
     steps:
       - uses: actions/checkout@master
       - uses: actions/setup-python@v2
@@ -50,14 +49,11 @@ jobs:
 
       - name: Create package
         run: |
-          python setup.py sdist
+          pip install cython setuptools wheel
+          python setup.py sdist bdist_wheel
 
       - name: Install package
+        working-directory: ./dist
         run: |
-          pip install virtualenv
-          virtualenv vEnv
-          source vEnv/bin/activate
-          pip install dist/*
-          cd .. & python -c "import birl ; print(birl.__version__)"
-          deactivate
-          rm -rf vEnv
+          pip install $(python -c "import glob ; pkg = glob.glob('*.whl')[0] ; print(pkg)")
+          python -c "import birl ; print(birl.__version__)"