Switch from tox to hatch

.github/workflows/test.yml

@@ -42,12 +42,19 @@ jobs:
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install Python build tools
-      run: python -m pip install tox wheel
+      run: python -m pip install hatch wheel
     - name: Run tests
-      run: python -m tox run -e py
+      if: startsWith(matrix.python-version, 'pypy') != true
+      run: hatch test -i python=${{ matrix.python-version }}
+    - name: Run tests (pypy)
+      if: startsWith(matrix.python-version, 'pypy') == true
+      run: |
+        PYTHONENV=${{ matrix.python-version }}
+        PYTHONENV=${PYTHONENV//-} # replace all dashes
+        hatch test -i python=${PYTHONENV}
     - name: Install Scipy prerequisites for Ubuntu
       if: startsWith(matrix.platform, 'ubuntu')
       run: sudo apt-get install libopenblas-dev
     - name: Run tests with scipy
       if: startsWith(matrix.platform, 'ubuntu') || startsWith(matrix.python-version, 'pypy') != true
-      run: python -m tox run -e py-scipy
+      run: hatch test -i python=${{ matrix.python-version }} -i feature=scipy

pyproject.toml

@@ -70,3 +70,29 @@ extend-exclude = []
 lint.extend-ignore = ["E731"]
 lint.extend-select = ["I", "W"]
 line-length = 109
+
+[tool.hatch.envs.default]
+dependencies = ["coverage[toml]", "pytest", "pytest-cov"]
+
+[tool.hatch.envs.default.scripts]
+test = 'pytest --cov-report=term-missing --cov-config=pyproject.toml --cov=autograd --cov=tests'
+
+[tool.hatch.envs.hatch-test.overrides]
+matrix.version.env-vars = "PRODUCT_VERSION"
+matrix.feature.env-vars = "EXPERIMENTAL=true"
+matrix.feature.dependencies = [{ value = "scipy", if = ["scipy"] }]
+
+[[tool.hatch.envs.hatch-test.matrix]]
+python = ["3.8", "3.9", "3.10", "3.11", "3.12"]
+
+[[tool.hatch.envs.hatch-test.matrix]]
+python = ["3.8", "3.9", "3.10", "3.11", "3.12"]
+feature = ["scipy"]
+
+[[tool.hatch.envs.hatch-test.matrix]]
+python = ["pypy-3.9", "pypy3.10"]
+
+[[tool.hatch.envs.hatch-test.matrix]]
+python = ["pypy3.9", "pypy3.10"]
+feature = ["scipy"]
+