CI: test multiple numpy/scipy versions on all platforms

.github/workflows/main.yml

@@ -68,29 +68,51 @@ jobs:
           path: ./dist/*.whl
 
   build_sdist:
-    name: sdist and coveralls
-    runs-on: ubuntu-latest
-
+    name: sdist on ${{ matrix.os }} with py ${{ matrix.ver.py }} numpy${{ matrix.ver.np }} scipy${{ matrix.ver.sp }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-13, macos-14]
+        # https://github.com/scipy/oldest-supported-numpy/blob/main/setup.cfg
+        ver:
+          - {py: '3.8', np: '==1.20.0', sp: '==1.5.4'}
+          - {py: '3.9', np: '==1.20.0', sp: '==1.5.4'}
+          - {py: '3.10', np: '==1.21.6', sp: '==1.7.2'}
+          - {py: '3.11', np: '==1.23.2', sp: '==1.9.2'}
+          - {py: '3.12', np: '==1.26.2', sp: '==1.11.2'}
+          - {py: '3.12', np: '>=2.0.0rc1', sp: '>=1.13.0'}
+        exclude:
+          - os: macos-14
+            ver: {py: '3.8', np: '==1.20.0', sp: '==1.5.4'}
+          - os: macos-14
+            ver: {py: '3.9', np: '==1.20.0', sp: '==1.5.4'}
+          - os: macos-14
+            ver: {py: '3.10', np: '==1.21.6', sp: '==1.7.2'}
     steps:
       - uses: actions/checkout@v4
         with:
           fetch-depth: '0'
 
-      - name: Set up Python 3.9
+      - name: Set up Python ${{ matrix.ver.py }}
         uses: actions/setup-python@v5
         with:
-          python-version: 3.9
+          python-version: ${{ matrix.ver.py }}
 
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install build coveralls>=3.0.0
+          pip install build "coveralls>=3.0.0"
+
+      - name: Install PyKrige
+        run: |
           pip install -v --editable .[test]
 
       - name: Run tests
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
+          pip install "numpy${{ matrix.ver.np }}" "scipy${{ matrix.ver.sp }}"
           python -m pytest --cov pykrige --cov-report term-missing -v tests/
           python -m coveralls --service=github
 
@@ -100,6 +122,7 @@ jobs:
           python -m build --sdist --outdir dist .
 
       - uses: actions/upload-artifact@v3
+        if: matrix.os == 'ubuntu-latest' && matrix.ver.py == '3.9'
         with:
           path: dist/*.tar.gz