wheels.yml: test fonttools core lib without extras when building wheels

we already run full tests suite at each push anyway. There are too many issues installing things like lxml or scipy on so many pythons/platforms/architectures, not worth the hassle

.github/workflows/wheels.yml

@@ -15,6 +15,9 @@ env:
   CIBW_SKIP: pp* cp*linux_i686
   CIBW_ENVIRONMENT: FONTTOOLS_WITH_CYTHON=1
   CIBW_TEST_REQUIRES: tox
+  # only test core fonttools library without extras for now, stuff like lxml or scipy
+  # create too many issues when testing on a large matrix of environments...
+  CIBW_TEST_COMMAND: "tox -c {package}/tox.ini -e py-cy-noextra --installpkg {wheel}"
 
 jobs:
 
@@ -27,27 +30,13 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [macos-latest, windows-latest]
+        os: [macos-latest, windows-latest, ubuntu-latest]
         arch: [auto64]
-        tox_env: ["py-cy"]
         include:
-          # the manylinux2014 image contains ALL the python versions we support
-          # use that for simplicity, and only if needed build for older manylinuxes
-          - os: ubuntu-latest
-            arch: auto
-            type: manylinux2014
-            tox_env: py-cy
-            CIBW_MANYLINUX_X86_64_IMAGE: manylinux2014
-            CIBW_MANYLINUX_I686_IMAGE: manylinux2014
-
           - os: macos-latest
             arch: universal2
-            tox_env: py-cy
-
           - os: windows-latest
             arch: auto32
-            # scipy doesn't have wheels for win32 hence run tox with 'noextra'
-            tox_env: py-cy-noextra
     steps:
     - uses: actions/checkout@v2
       with:
@@ -63,10 +52,8 @@ jobs:
     - name: Build Wheels
       run: python -m cibuildwheel --output-dir wheelhouse .
       env:
-        CIBW_MANYLINUX_I686_IMAGE: ${{ matrix.CIBW_MANYLINUX_I686_IMAGE }}
-        CIBW_MANYLINUX_X86_64_IMAGE: ${{ matrix.CIBW_MANYLINUX_X86_64_IMAGE }}
+        CIBW_MANYLINUX_X86_64_IMAGE: manylinux2014
         CIBW_ARCHS: ${{ matrix.arch }}
-        CIBW_TEST_COMMAND: "tox -c {package}/tox.ini -e ${{ matrix.tox_env }} --installpkg {wheel}"
     - uses: actions/upload-artifact@v2
       with:
         path: wheelhouse/*.whl