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/hamlet/default.nix

@@ -9,6 +9,7 @@ cabal.mkDerivation (self: {
   buildDepends = [
     blazeBuilder blazeHtml blazeMarkup failure parsec shakespeare text
   ];
+  jailbreak = true;
   meta = {
     homepage = "http://www.yesodweb.com/book/shakespearean-templates";
     description = "Haml-like template files that are compile-time checked";