Fix setup.py to not use pip internal APIs

setup.py

@@ -4,56 +4,52 @@
 See LICENCE.txt for licensing and contact information.
 """
 
-from distutils.core import setup
-try: # for pip >= 10
-    from pip._internal.req import parse_requirements
-except ImportError: # for pip <= 9.0.3
-    from pip.req import parse_requirements
+from setuptools import setup
 from runpy import run_path
 
-install_reqs = parse_requirements('requirements.txt', session=False)
-try:  # for pip < 20.1
-    install_requires = [str(ir.req) for ir in install_reqs]
-except AttributeError:  # for pip >= 20.1
-    install_requires = [str(ir.requirement) for ir in install_reqs]
 
 def get_version():
-    namespace = run_path('chumpy/version.py')
-    return namespace['version']
+    namespace = run_path("chumpy/version.py")
+    return namespace["version"]
 
-setup(name='chumpy',
+
+# Read requirements directly from requirements.txt
+# Don't use pip's internal APIs - they're not meant for setup.py
+with open("requirements.txt") as f:
+    install_requires = [
+        line.strip() for line in f if line.strip() and not line.startswith("#")
+    ]
+
+
+setup(
+    name="chumpy",
     version=get_version(),
-    packages = ['chumpy'],
-    author='Matthew Loper',
-    author_email='matt.loper@gmail.com',
-    url='https://github.com/mattloper/chumpy',
-    description='chumpy',
-    license='MIT',
+    packages=["chumpy"],
+    author="Matthew Loper",
+    author_email="matt.loper@gmail.com",
+    url="https://github.com/mattloper/chumpy",
+    description="chumpy",
+    license="MIT",
     install_requires=install_requires,
-
+    python_requires=">=2.7",
     # See https://pypi.python.org/pypi?%3Aaction=list_classifiers
     classifiers=[
         # How mature is this project? Common values are
         #   3 - Alpha
         #   4 - Beta
         #   5 - Production/Stable
-        'Development Status :: 4 - Beta',
-
+        "Development Status :: 4 - Beta",
         # Indicate who your project is intended for
-        'Intended Audience :: Science/Research',
-        'Topic :: Scientific/Engineering :: Mathematics',
-
+        "Intended Audience :: Science/Research",
+        "Topic :: Scientific/Engineering :: Mathematics",
         # Pick your license as you wish (should match "license" above)
-        'License :: OSI Approved :: MIT License',
-
+        "License :: OSI Approved :: MIT License",
         # Specify the Python versions you support here. In particular, ensure
         # that you indicate whether you support Python 2, Python 3 or both.
-        'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.7',
-        'Programming Language :: Python :: 3',
-
-        'Operating System :: MacOS :: MacOS X',
-        'Operating System :: POSIX :: Linux'
+        "Programming Language :: Python :: 2",
+        "Programming Language :: Python :: 2.7",
+        "Programming Language :: Python :: 3",
+        "Operating System :: MacOS :: MacOS X",
+        "Operating System :: POSIX :: Linux",
     ],
 )
-

test_build.sh

@@ -0,0 +1,74 @@
+#!/usr/bin/env bash
+set -e
+
+echo "════════════════════════════════════════"
+echo "  Testing chumpy build and install"
+echo "════════════════════════════════════════"
+echo ""
+
+# Clean previous artifacts
+echo "🧹 Cleaning previous builds..."
+rm -rf dist/ build/ *.egg-info test-pip test-uv test-wheel
+
+echo ""
+echo "════════════════════════════════════════"
+echo "  Test 1: pip install ."
+echo "════════════════════════════════════════"
+echo ""
+
+python3 -m venv test-pip
+source test-pip/bin/activate
+pip install . -q
+python -c "import chumpy; print(f'✓ Test 1 PASSED: chumpy {chumpy.__version__} via pip install .')"
+deactivate
+rm -rf test-pip
+
+echo ""
+echo "════════════════════════════════════════"
+echo "  Test 2: uv pip install ."
+echo "════════════════════════════════════════"
+echo ""
+
+uv venv test-uv
+source test-uv/bin/activate
+uv pip install .
+python -c "import chumpy; print(f'✓ Test 2 PASSED: chumpy {chumpy.__version__} via uv pip install .')"
+deactivate
+rm -rf test-uv
+
+echo ""
+echo "════════════════════════════════════════"
+echo "  Test 3: python -m build"
+echo "════════════════════════════════════════"
+echo ""
+
+pip install build -q
+python -m build
+
+echo ""
+echo "Built artifacts:"
+ls -lh dist/
+
+echo ""
+echo "Testing wheel installation..."
+python3 -m venv test-wheel
+source test-wheel/bin/activate
+
+# Install the wheel (use wildcard to match whatever version was built)
+WHEEL_FILE=$(ls dist/*.whl | head -n 1)
+echo "Installing: $WHEEL_FILE"
+pip install "$WHEEL_FILE" -q
+
+python -c "import chumpy; print(f'✓ Test 3 PASSED: chumpy {chumpy.__version__} from wheel')"
+deactivate
+rm -rf test-wheel
+
+echo ""
+echo "════════════════════════════════════════"
+echo "  ✅ All tests PASSED!"
+echo "════════════════════════════════════════"
+echo ""
+echo "Ready to:"
+echo "  1. Submit PR to original chumpy repo"
+echo "  2. Publish to PyPI (optional)"
+echo ""