Build failure of syb-with-class with ghc-7.2.1

[Bas van Dijk]

Hello,

the HEAD of syb-with-class fails with the following error when build
with ghc-7.2.1 and template-haskell-2.6:

http://code.google.com/p/syb-with-class/issues/detail?id=4

Is this a bug in TH?

Regards,

Bas