Try to fix osx ci-build.

.github/workflows/ci-osx.yaml

@@ -8,7 +8,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.5", "3.6", "3.7", "3.8"]
+        python-version: ["3.6", "3.7", "3.8"]
 
     steps:
       - name: Checkout source
@@ -17,17 +17,28 @@ jobs:
           submodules: recursive
 
       - name: Set up Python
-        uses: actions/setup-python@v1
+        uses: conda-incubator/setup-miniconda@master
         with:
-          python-version: ${{ matrix.python-version }}
-
+            channels: conda-forge
+            python-version: ${{ matrix.python-version }}
+        env:
+            ACTIONS_ALLOW_UNSECURE_COMMANDS: true
       - name: Install numcodecs
+        shell: "bash -l {0}"
         run: |
-          python -m pip install -U pip setuptools wheel pytest
-          python -m pip install -v -e .
-
-      - name: List installed packages
-        run: python -m pip list
+          conda create -n env python==${{matrix.python-version}} wheel cython numpy msgpack-python pytest wheel pip compilers
+          conda activate env
+          which pip
+          conda env export
+      - name: Install numcodecs
+        shell: "bash -l {0}"
+        run: |
+          conda activate env
+          export CC=clang
+          python setup.py build
 
       - name: Run tests
-        run: pytest -v --pyargs numcodecs
+        shell: "bash -l {0}"
+        run: |
+          conda activate env
+          pytest -v --pyargs numcodecs

.github/workflows/wheel.yaml

@@ -13,7 +13,7 @@ jobs:
     env:
       CIBW_TEST_COMMAND: pytest --pyargs numcodecs
       CIBW_TEST_REQUIRES: pytest
-      CIBW_SKIP: "*27* pp*"
+      CIBW_SKIP: "*27* pp* *35*"
       CIBW_ENVIRONMENT: "DISABLE_NUMCODECS_AVX2=1"
       CIBW_ENVIRONMENT_MACOS: "MACOSX_DEPLOYMENT_TARGET=10.9 DISABLE_NUMCODECS_AVX2=1"
 

docs/release.rst

@@ -1,6 +1,11 @@
 Release notes
 =============
 
+* Remove support for Python 3.5 which is end of life. While the code base might
+  still be compatible; the source dist and wheel are marked as Python 3.6+ and
+  pip will not install them. Continuous integration on Python 3.5 has been
+  disabled.
+
 .. _release_0.7.2:
 
 0.7.2

setup.py

@@ -318,8 +318,9 @@ def run_setup(with_extensions):
         },
         ext_modules=ext_modules,
         cmdclass=cmdclass,
-        package_dir={'': '.'},
-        packages=['numcodecs', 'numcodecs.tests'],
+        package_dir={"": "."},
+        python_requires=">=3.6, <4",
+        packages=["numcodecs", "numcodecs.tests"],
         classifiers=[
             'Development Status :: 4 - Beta',
             'Intended Audience :: Developers',
@@ -330,7 +331,6 @@ def run_setup(with_extensions):
             'Topic :: Software Development :: Libraries :: Python Modules',
             'Operating System :: Unix',
             'Programming Language :: Python :: 3',
-            'Programming Language :: Python :: 3.5',
             'Programming Language :: Python :: 3.6',
             'Programming Language :: Python :: 3.7',
             'Programming Language :: Python :: 3.8',