Re #4343 Update in-app docs for dot and ls dependencies commands

src/Stack/Options/DotParser.hs

@@ -12,11 +12,12 @@ import           Data.List.Split ( splitOn )
 import qualified Data.Set as Set
 import           Distribution.Types.PackageName ( mkPackageName )
 import           Options.Applicative
-                   ( Parser, auto, help, idm, long, metavar, option, strOption
-                   , switch
+                   ( Parser, auto, completer, help, idm, long, metavar, option
+                   , strOption, switch
                    )
-import           Options.Applicative.Builder.Extra ( boolFlags )
-import           Stack.Options.BuildParser ( flagsParser, targetsParser )
+import           Options.Applicative.Builder.Extra ( boolFlags, textArgument )
+import           Stack.Options.BuildParser ( flagsParser )
+import           Stack.Options.Completion ( targetCompleter )
 import           Stack.Prelude
 import           Stack.Types.DotOpts ( DotOpts (..) )
 
@@ -52,6 +53,17 @@ dotOptsParser externalDefault = DotOpts
     <> help "Prune specified package(s). PACKAGES is a comma-separated list of \
             \package names."
     ))
+
+  targetsParser :: Parser [Text]
+  targetsParser =
+    many (textArgument
+      (  metavar "TARGET"
+      <> completer targetCompleter
+      <> help "Can be specified multiple times. If none specified, use all \
+              \project packages. Ignores project package components and \
+              \non-project packages."
+      ))
+
   testTargets = switch
     (  long "test"
     <> help "Consider dependencies of test components."