WIP Restrict install cffi in test_requirements.txt

Author: thomasjpfan

.github/workflows/wheels.yml

@@ -59,7 +59,6 @@ jobs:
         - os: ubuntu-latest
           python: "310"
           platform: manylinux_x86_64
-          install_libffi_devel: "1"
 
         # macos builds
         - os: macos-latest
@@ -95,10 +94,6 @@ jobs:
           CIBW_BUILD_VERBOSITY: 3
           CIBW_BEFORE_BUILD: bash {project}/tools/wheels/cibw_before_build.sh {project}
           CIBW_BEFORE_TEST: pip install -r {project}/test_requirements.txt
-          # Installs libffi so that cffi can be built from source when needed
-          CIBW_BEFORE_TEST_LINUX: >
-            [[ "${{ matrix.install_libffi_devel }}" == "1" ]] && yum install -y libffi-devel;
-            pip install -r {project}/test_requirements.txt
           CIBW_TEST_COMMAND:  bash {project}/tools/wheels/cibw_test_command.sh {project}
 
       - uses: actions/upload-artifact@v2

test_requirements.txt

@@ -7,7 +7,7 @@ pytz==2021.3
 pytest-cov==3.0.0
 pickle5; python_version == '3.7' and platform_python_implementation != 'PyPy'
 # for numpy.random.test.test_extending
-cffi
+cffi; python_version <= '3.10'
 # For testing types. Notes on the restrictions:
 # - Mypy relies on C API features not present in PyPy
 mypy==0.910; platform_python_implementation != "PyPy"