Added option to the haskell mkDerivation to build quickjump index

When visiting local documentation via hoogle currently for most
packages the quickjump index is missing so you only get a sad error
when pressing "s" to search in the current documentation.

pkgs/development/haskell-modules/generic-builder.nix

@@ -24,6 +24,7 @@ in
 , doCheck ? !isCross && stdenv.lib.versionOlder "7.4" ghc.version
 , doBenchmark ? false
 , doHoogle ? true
+, doHaddockQuickjump ? doHoogle
 , editedCabalFile ? null
 , enableLibraryProfiling ? !(ghc.isGhcjs or false)
 , enableExecutableProfiling ? false
@@ -396,6 +397,7 @@ stdenv.mkDerivation ({
     ${optionalString (doHaddock && isLibrary) ''
       ${setupCommand} haddock --html \
         ${optionalString doHoogle "--hoogle"} \
+        ${optionalString doHaddockQuickjump "--quickjump"} \
         ${optionalString (isLibrary && hyperlinkSource) "--hyperlink-source"} \
         ${stdenv.lib.concatStringsSep " " haddockFlags}
     ''}