jailbreak packages to support blaze-html 0.6.0.0

- hamlet
 - happstack-server
 - heist
 - highlighting-kate
 - xml-conduit
 - xmlhtml
 - yesod-auth
 - yesod-core
 - yesod-form

pkgs/development/libraries/haskell/xml-conduit/default.nix

@@ -13,6 +13,7 @@ cabal.mkDerivation (self: {
     blazeHtml blazeMarkup conduit dataDefault failure monadControl
     resourcet systemFilepath text transformers xmlTypes
   ];
+  jailbreak = true;
   meta = {
     homepage = "http://github.com/snoyberg/xml";
     description = "Pure-Haskell utilities for dealing with XML with the conduit package";