Force the C extension to be built unless on pypy

.github/workflows/publish.yml

@@ -25,6 +25,7 @@ jobs:
     - name: Build wheels
       uses: pypa/[email protected]
       env:
+        CBOR2_BUILD_C_EXTENSION: "1"
         CIBW_SKIP: pp* cp36* cp37*
         CIBW_ARCHS: auto64
         CIBW_ARCHS_MACOS: x86_64 arm64

.github/workflows/test.yml

@@ -35,6 +35,7 @@ jobs:
       run: pip install -e .[test]
       env:
         CFLAGS: "-UNDEBUG"
+        CBOR2_BUILD_C_EXTENSION: "${{ matrix.python-version == 'pypy-3.10' && '0' || '1' }}"
     - name: Test with pytest
       run: coverage run -m pytest -v
       env:

pyproject.toml

@@ -97,6 +97,11 @@ minversion = 4.0.0
 commands = python -m pytest {posargs}
 package = editable
 extras = test
+setenv =
+  TZ=America/New_York
+  CBOR2_BUILD_C_EXTENSION=1
+
+[testenv:pypy3]
 setenv =
   TZ=America/New_York