Print info about current project file in use to stderr (fix #10547)

Author: ulysses4ever

cabal-install/src/Distribution/Client/ProjectPlanning.hs

@@ -399,7 +399,7 @@ rebuildProjectConfig
 
     sequence_
       [ do
-        notice verbosity . render . vcat $
+        warn verbosity . render . vcat $
           text "Configuration is affected by the following files:"
             : [text "-" <+> docProjectConfigPath path]
       | Explicit path <- Set.toList $ projectConfigProvenance projectConfig