Fix coverage

Author: kunitoki

.github/workflows/coverage.yml

@@ -93,6 +93,7 @@ jobs:
         mkdir -p coverage
         lcov --directory . --capture --output-file coverage/coverage.info --ignore-errors ${IGNORE_ERRORS}
         lcov -r coverage/coverage.info \
+          "*/pybind11/*" \
           "*/thirdparty/*" \
           "*/build/*" \
           "*/tests/*" \

python/setup.py

@@ -156,6 +156,8 @@ def generate_coverage(self, cwd):
         log.info("generating coverage files")
 
         self.spawn([sys.executable, "-m", "pytest", "-s", os.path.join(cwd, "tests")])
+        self.spawn(["lcov", "--directory", cwd, "--capture", "--output-file", "coverage/coverage.info",
+                    "--ignore-errors", "mismatch,gcov,source,negative,unused,empty,format,corrupt"])
 
         if not os.path.isdir("/host"): # We are not running in cibuildwheel container
             return