Fix issue with EvalItem.reportinfo() causing pytest error

src/pyeval/plugin.py

@@ -212,4 +212,6 @@ def runtest(self):
     def reportinfo(self):
         parent_name = f"{self.parent.name}:" if self.parent is not None else ""
 
-        return self.fspath, None, f"{parent_name}{self.name}"
+        # 0 is the pytest convention for synthetic items with no source line —
+        # see https://docs.pytest.org/en/stable/example/nonpython.html
+        return self.fspath, 0, f"{parent_name}{self.name}"

tests/evals/eval_skipif.py

@@ -0,0 +1,17 @@
+"""Regression test: pytestmark skipif must not cause INTERNALERROR."""
+
+import pytest
+
+from pyeval import Case, dataset, execute
+
+pytestmark = pytest.mark.skipif(
+    True,
+    reason="always skipped — tests that EvalItem handles pytestmark skipif without INTERNALERROR",
+)
+
+
+@dataset(
+    Case(name="skipped_case", inputs="hello", expected_output="hello"),
+)
+def eval_skipif_regression(case):
+    execute(lambda x: x, case)