Build with numpy==2.0

This is in lei with their advice on being ABI compatible with both numpy
2.x and 1.x.

It's also the opposite way to how ABI issues are normally kept away and
I don't feel much confidence in NumPy's packaging strategies so I've
added testing against the oldest supported numpy rather than take it on
trust that we're not breaking 1.x compatibility.

Closes #23

.github/workflows/build-wheels.yml

@@ -19,7 +19,7 @@ jobs:
       - uses: actions/setup-python@v3
 
       - name: Install cibuildwheel
-        run: python -m pip install cibuildwheel==2.16.2
+        run: python -m pip install cibuildwheel
 
       # We need docker's cross architecture emulation to build ARM wheels.
       - if: startsWith(matrix.os, 'ubuntu')

.github/workflows/test.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
+        os: [ubuntu-latest, macos-13, windows-latest]
         python-version: [3.7, 3.8, 3.9, '3.10', 3.11, 3.12]
       fail-fast: false
 
@@ -31,3 +31,7 @@ jobs:
 
       # Test
       - run: pytest
+
+      # Test again with oldest NumPy for ABI incompatibilities
+      - run: pip install --force-reinstall oldest-supported-numpy trimesh
+      - run: pytest

VERSION

@@ -1 +1 @@
-0.2.0
+0.2.1

pyproject.toml

@@ -3,5 +3,8 @@ requires = [
   "setuptools",
   "wheel",
   "cython",
-  "oldest-supported-numpy",
+  # NumPy must be locked in order to support 1.x and 2.x
+  "numpy==2.0; python_version >= '3.9'",
+  # Unless building for a Python version that NumPy 2.x doesn't support
+  "oldest-supported-numpy; python_version <= '3.8'",
 ]