We do not have this optional test dependency packaged yet.

--- whey-0.1.1/tox.ini.orig
+++ whey-0.1.1/tox.ini
@@ -221,7 +221,6 @@
 unused-arguments-ignore-variadic-names = True
 
 [coverage:run]
-plugins = coverage_pyver_pragma
 
 [coverage:report]
 fail_under = 95
--- whey-0.1.1/tests/requirements.txt.orig
+++ whey-0.1.1/tests/requirements.txt
@@ -1,6 +1,5 @@
 coincidence>=0.2.0
 coverage>=5.1
-coverage-pyver-pragma>=0.2.1
 editables>=0.2
 importlib-metadata>=3.6.0
 iniconfig!=1.1.0,>=1.0.1