TST: Test that packages can be build from sdists.

.github/workflows/basemap-for-manylinux.yml

@@ -137,10 +137,11 @@ jobs:
         name: Build wheel
         run: |
           cd ${{ env.PKGDIR }}
-          export GEOS_DIR=extern
-          export NUMPY_INCLUDE_PATH=extern/include
+          export GEOS_DIR="${GITHUB_WORKSPACE}/${{ env.PKGDIR }}/extern"
+          export NUMPY_INCLUDE_PATH="${GITHUB_WORKSPACE}/${{ env.PKGDIR }}/extern/include"
+          pip install build
           pip install -r requirements-setup.txt
-          python setup.py sdist bdist_wheel
+          python -m build
       -
         name: Upload build artifacts
         uses: actions/upload-artifact@v1

.github/workflows/basemap-for-windows.yml

@@ -130,7 +130,7 @@ jobs:
       -
         name: Install Python base packages
         run: |
-          python -m pip install --upgrade pip setuptools wheel
+          python -m pip install --upgrade pip setuptools wheel build
       -
         name: Generate NumPy headers
         run: |
@@ -164,8 +164,8 @@ jobs:
         name: Build wheel
         run: |
           cd ${{ env.PKGDIR }}
-          $env:GEOS_DIR = "extern"
-          $env:NUMPY_INCLUDE_PATH = "extern/include"
+          $env:GEOS_DIR = "$env:GITHUB_WORKSPACE/${{ env.PKGDIR }}/extern"
+          $env:NUMPY_INCLUDE_PATH = "$env:GITHUB_WORKSPACE/${{ env.PKGDIR }}/extern/include"
           pip install -r requirements-setup.txt
           python setup.py sdist bdist_wheel
       -

packages/basemap/MANIFEST.in

@@ -0,0 +1,8 @@
+include requirements*.txt
+recursive-include doc *
+recursive-exclude doc/build *
+recursive-include test *
+recursive-include utils *.py
+recursive-exclude **/__pycache__ *
+exclude **/*.pyc
+exclude **/.gitkeep

packages/basemap/pyproject.toml

@@ -0,0 +1,3 @@
+[build-system]
+requires = ["setuptools", "wheel", 'oldest-supported-numpy; python_version >= "3.5"', 'numpy; python_version < "3.5"', "cython"]
+build-backend = "setuptools.build_meta"