Description: Disable doctests
 Disable doctests since they fail on too many architectures, with what seems to
 be a GHC bug.

--- a/rank2classes.cabal
+++ b/rank2classes.cabal
@@ -54,6 +54,7 @@ test-suite TH
   if !flag(use-template-haskell)
     buildable: False
   type:                exitcode-stdio-1.0
+  buildable: false
   hs-source-dirs:      test
   default-language:    Haskell2010
   main-is:             TH.hs
