Argh, can't do version slugs except in the default test env… let's do the XML dance there.

.github/workflows/cicd.yml

@@ -208,11 +208,10 @@ jobs:
           else  # CPython
               py_test="py${py/./}";  # Add "py" prefix, remove "."
           fi;
-          env_test="test-${py_test}";
+          env_test="test-${py_test}-coverage_xml";
           echo "Test environment: ${env_test}";
           tox -e "${env_test}";
           tar cvzf pytest-logs.tgz ".tox/${env_test}/log";
-          tox -e "coverage_xml-${py_test}";
 
       - name: Upload pytest log artifact
         if: failure()

tox.ini

@@ -77,6 +77,7 @@ passenv = CI
 
 commands =
     pytest --cov={env:PY_MODULE} --cov-report=term-missing:skip-covered --doctest-modules {posargs:src/{env:PY_MODULE}}
+    coverage_xml: coverage xml
 
 
 ##
@@ -263,33 +264,6 @@ commands =
     - coverage html
 
 
-##
-# Coverage XML
-##
-
-[testenv:coverage_xml]
-
-description = generate coverage XML
-
-depends = {[coverage_report]depends}
-
-basepython = {[default]basepython}
-
-skip_install = True
-
-deps =
-    # coverage 5.0 drops Python 3.4 support
-    py{26,27,34,py2}: coverage==4.5.4  # rq.filter: <5
-    py{35,36,37,38,39,py3}: coverage==5.3.1
-
-setenv =
-    {[testenv:coverage_report]setenv}
-
-commands =
-    coverage combine
-    coverage xml
-
-
 ##
 # Codecov
 ##