'cabal configure' shouldn't accept the 'dependency' option.

cabal-install/Distribution/Client/Config.hs

@@ -371,7 +371,8 @@ configFieldDescriptions =
 
   ++ toSavedConfig liftConfigFlag
        (configureOptions ParseArgs)
-       (["builddir", "configure-option", "constraint"] ++ map fieldName installDirsFields)
+       (["builddir", "configure-option", "constraint", "dependency"]
+        ++ map fieldName installDirsFields)
 
         --FIXME: this is only here because viewAsFieldDescr gives us a parser
         -- that only recognises 'ghc' etc, the case-sensitive flag names, not

cabal-install/Distribution/Client/Setup.hs

@@ -861,7 +861,8 @@ installCommand = CommandUI {
      ++ "    Constrained package version\n",
   commandDefaultFlags = (mempty, mempty, mempty, mempty),
   commandOptions      = \showOrParseArgs ->
-       liftOptions get1 set1 (filter ((/="constraint") . optionName) $
+       liftOptions get1 set1
+       (filter ((`notElem` ["constraint", "dependency"]) . optionName) $
                               configureOptions   showOrParseArgs)
     ++ liftOptions get2 set2 (configureExOptions showOrParseArgs)
     ++ liftOptions get3 set3 (installOptions     showOrParseArgs)