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-rw-r--r--synapse/python_dependencies.py8
1 files changed, 7 insertions, 1 deletions
diff --git a/synapse/python_dependencies.py b/synapse/python_dependencies.py
index ec0ac547c1..07345e916a 100644
--- a/synapse/python_dependencies.py
+++ b/synapse/python_dependencies.py
@@ -147,7 +147,13 @@ def check_requirements(for_feature=None):
             )
         except DistributionNotFound:
             deps_needed.append(dependency)
-            errors.append("Needed %s but it was not installed" % (dependency,))
+            if for_feature:
+                errors.append(
+                    "Needed %s for the '%s' feature but it was not installed"
+                    % (dependency, for_feature)
+                )
+            else:
+                errors.append("Needed %s but it was not installed" % (dependency,))
 
     if not for_feature:
         # Check the optional dependencies are up to date. We allow them to not be