manual xfail for specific test matrix

Author: tclose

pydra/compose/shell/tests/test_shell_run.py

@@ -2250,10 +2250,6 @@ class Outputs(shell.Outputs):
     assert outputs.out1.fspath.exists()
 
 
-@pytest.mark.xfail(
-    sys.platform == "linux" and os.environ.get("TOX_ENV_NAME") == "py311-pre",
-    reason="I'm not sure why this is failing only on this part of the test matrix, hoping it will just go away :)",
-)
 @pytest.mark.parametrize("results_function", [run_no_submitter, run_submitter])
 def test_shell_cmd_outputspec_7(tmp_path, worker, results_function):
     """
@@ -2294,7 +2290,19 @@ class Outputs(shell.Outputs):
         files_id=new_files_id,
     )
 
-    outputs = results_function(shelly, worker=worker, cache_root=tmp_path)
+    try:
+        outputs = results_function(shelly, worker=worker, cache_root=tmp_path)
+    except Exception:
+        if (
+            worker == "cf"
+            and sys.platform == "linux"
+            and os.environ.get("TOX_ENV_NAME") == "py311-pre"
+        ):  # or whatever the ConcurrentFutures worker value is
+            pytest.xfail(
+                "Known issue this specific element in the test matrix, not sure what it is though"
+            )
+        else:
+            raise
     assert outputs.stdout == ""
     for file in outputs.new_files:
         assert file.fspath.exists()