Fix #9151 (cabal init logs at loglevel "Log")

cabal-install/src/Distribution/Client/Init/FileCreators.hs

@@ -65,7 +65,7 @@ writeProject (ProjectSettings opts pkgDesc libTarget exeTarget testTarget)
       message opts T.Error "no package name given, so no .cabal file can be generated\n"
   | otherwise = do
       -- clear prompt history a bit"
-      message opts T.Log $
+      message opts T.Info $
         "Using cabal specification: "
           ++ showCabalSpecVersion (_optCabalSpec opts)
 
@@ -269,7 +269,7 @@ writeFileSafe opts fileName content = do
 
   go exists
 
-  message opts T.Log $ show action ++ " file " ++ fileName ++ "..."
+  message opts T.Info $ show action ++ " file " ++ fileName ++ "..."
   return $ action == Existing
   where
     doOverwrite = _optOverwrite opts
@@ -279,7 +279,7 @@ writeFileSafe opts fileName content = do
           writeFile fileName content
       | exists && doOverwrite = do
           newName <- findNewPath fileName
-          message opts T.Log $
+          message opts T.Info $
             concat
               [ fileName
               , " already exists. Backing up old version in "
@@ -302,7 +302,7 @@ writeDirectoriesSafe opts dirs = fmap or $ for dirs $ \dir -> do
 
   go dir exists
 
-  message opts T.Log $ show action ++ " directory ./" ++ dir ++ "..."
+  message opts T.Info $ show action ++ " directory ./" ++ dir ++ "..."
   return $ action == Existing
   where
     doOverwrite = _optOverwrite opts
@@ -312,7 +312,7 @@ writeDirectoriesSafe opts dirs = fmap or $ for dirs $ \dir -> do
           createDirectory dir
       | exists && doOverwrite = do
           newDir <- findNewPath dir
-          message opts T.Log $
+          message opts T.Info $
             concat
               [ dir
               , " already exists. Backing up old version in "

cabal-install/src/Distribution/Client/Init/Types.hs

@@ -368,7 +368,7 @@ instance Interactive IO where
   hFlush = System.IO.hFlush
   message q severity msg
     | q == silent = pure ()
-    | otherwise = putStrLn $ "[" ++ show severity ++ "] " ++ msg
+    | otherwise = putStrLn $ "[" ++ displaySeverity severity ++ "] " ++ msg
   break = return False
   throwPrompt = throwM
 
@@ -407,7 +407,7 @@ instance Interactive PurePrompt where
     Error -> PurePrompt $ \_ ->
       Left $
         BreakException
-          (show severity ++ ": " ++ msg)
+          (displaySeverity severity ++ ": " ++ msg)
     _ -> return ()
 
   break = return True
@@ -455,7 +455,13 @@ newtype BreakException = BreakException String deriving (Eq, Show)
 instance Exception BreakException
 
 -- | Used to inform the intent of prompted messages.
-data Severity = Log | Info | Warning | Error deriving (Eq, Show)
+data Severity = Info | Warning | Error deriving (Eq)
+
+displaySeverity :: Severity -> String
+displaySeverity severity = case severity of
+  Info -> "Info"
+  Warning -> "Warn"
+  Error -> "Err"
 
 -- | Convenience alias for the literate haskell flag
 type IsLiterate = Bool

cabal-install/src/Distribution/Client/Init/Utils.hs

@@ -214,7 +214,7 @@ retrieveDependencies v flags mods' pkgIx = do
       modDeps = map (\(mn, ds) -> (mn, ds, M.lookup ds modMap)) mods
   -- modDeps = map (id &&& flip M.lookup modMap) mods
 
-  message v Log "Guessing dependencies..."
+  message v Info "Guessing dependencies..."
   nub . catMaybes <$> traverse (chooseDep v flags) modDeps
 
 -- Given a module and a list of installed packages providing it,

changelog.d/pr-9346

@@ -0,0 +1,12 @@
+synopsis: remove 
+packages: cabal-install
+prs: #9346
+issues: #9151
+significance: significant
+
+description: {
+
+- Remove "Log" as a log level in favour of "Info".
+- Remove "Show" in Severity and replace by "displaySeverity" function
+
+}