python-utils-r1.eclass: Cleanup cache dirs after epytest

Make epytest clean up common cache directories .hypothesis
and .pytest_cache after the execution.  If pytest is executed
in ${BUILD_DIR}/lib, these directories end up being wrongly installed,
and so far ebuilds had to handle cleaning them up.

Signed-off-by: Michał Górny <[email protected]>

eclass/python-utils-r1.eclass

@@ -1272,7 +1272,12 @@ epytest() {
 
  echo "${@}" >&2
  "${@}" || die -n "pytest failed with ${EPYTHON}"
- return ${?}
+ local ret=${?}
+
+ # remove common temporary directories left over by pytest plugins
+ rm -rf .hypothesis .pytest_cache || die
+
+ return ${ret}
 }
 
 # @FUNCTION: eunittest