Avoid whatever nonsense pkg_resources error.

Just use virtue in CI.

Author: Julian

tox.ini

@@ -35,7 +35,7 @@ commands =
 
     build: {envpython} -m build {toxinidir} --outdir {envtmpdir}/dist
 
-    tests,coverage,ghcoverage: {envpython} -Werror -m {env:MAYBE_COVERAGE:} twisted.trial {posargs:jsonschema}
+    tests,coverage,ghcoverage: {envpython} -Werror -m {env:MAYBE_COVERAGE:} virtue {posargs:jsonschema}
     tests: {envpython} -m doctest {toxinidir}/README.rst
 
     coverage: {envpython} -m coverage report --show-missing
@@ -53,7 +53,7 @@ deps =
 
     perf: pyperf
 
-    tests,coverage,ghcoverage: twisted
+    tests,coverage,ghcoverage: virtue
 
     coverage,ghcoverage: coverage>=7.0.0b1