changed error message in response to review.

oliver-sanders · Oct 27, 2021 · 3fd6304 · 3fd6304
1 parent 1dfd7d3
commit 3fd6304
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/cylc/rose/platform_utils.py b/cylc/rose/platform_utils.py
@@ -50,8 +50,8 @@ def get_platform_from_task_def(
     platform = get_platform(task_spec)
     if platform is None:
         raise PlatformLookupError(
-            'Platform lookup failed because the platform definition for'
-            f' task {task} is {task_spec["platform"]}.'
+            'Platform lookup failed; platform is a subshell to be evaluated: '
+            f' Task: {task}, platform: {task_spec["platform"]}.'
         )
     return platform