Test enable groups as specified by PR labels (#2357)

* Allow CIBW_ENABLE to control the wheels built in testing

* Set CIBW_ENABLE using PR labels

* Add docs

* Build everything on the main branch

* Add CIBW_ENABLE=all option

This was mostly for use in the `main` building case, because otherwise it's maybe a bit too easy to forget to update this file when adding an enable group

* Remove dead code

* Make unit tests robust to the value of CIBW_ENABLE

* Fix tests that explicitly choose pypy

* Fix test expectation

* Don't expect impossible wheels in expected_wheels

* Simplify logic in expected_wheels

* CircleCI- run with CIBW_ENABLE=all only on the main branch

* Azure pipelines - run with CIBW_ENABLE=all on main branch

* Update gitlab to run CIBW_ENABLE=all on main

* Set CIBW_ENABLE=all on travis - it only runs on main anyway

* Fix job name error on CircleCI

* Fix tests for graalpy

* Update the test configuration to use the label

* Remove duplication of default value. Make it affect sample build too

* Move the action to after deps are installed

* GraalPy workaround for this assumption

* Make unit test resilient to changing CIBW_ENABLE

.travis.yml

@@ -14,13 +14,17 @@ jobs:
     - name: Linux | x86_64 + i686 | Python 3.12
       python: 3.12
       services: docker
-      env: PYTHON=python
+      env:
+        - PYTHON=python
+        - CIBW_ENABLE=all
 
     - name: Linux | arm64 | Python 3.12
       python: 3.12
       services: docker
       arch: arm64
-      env: PYTHON=python
+      env:
+        - PYTHON=python
+        - CIBW_ENABLE=all
 
     - name: Linux | ppc64le | Python 3.12
       python: 3.12
@@ -32,6 +36,7 @@ jobs:
         # skip test_manylinuxXXXX_only, it uses too much disk space
         # c.f. https://travis-ci.community/t/running-out-of-disk-space-quota-when-using-docker-on-ppc64le/11634
         - PYTEST_ADDOPTS='-k "not test_manylinuxXXXX_only"'
+        - CIBW_ENABLE=all
 
     - name: Windows | x86_64 | Python 3.12
       os: windows
@@ -40,13 +45,16 @@ jobs:
         - choco upgrade python3 -y --version 3.12.8 --limit-output --params "/InstallDir:C:\\Python312"
       env:
         - PYTHON=C:\\Python312\\python
+        - CIBW_ENABLE=all
 
     - name: Linux | s390x | Python 3.12
       python: 3.12
       services: docker
       arch: s390x
       allow_failure: True
-      env: PYTHON=python
+      env:
+        - PYTHON=python
+        - CIBW_ENABLE=all
 
 install:
 - if [ "${TRAVIS_OS_NAME}" == "linux" ]; then docker run --rm --privileged docker.io/tonistiigi/binfmt:latest --install all; fi