@@ -33,6 +33,11 @@ library
33 build-depends:
33 build-depends:
37+ ExistentialQuantification
36 --TODO: upgrade to -Wall:
41 --TODO: upgrade to -Wall:
37 ghc-options: -W -fwarn-orphans
42 ghc-options: -W -fwarn-orphans
38 if impl(ghc >= 6.8)
43 if impl(ghc >= 6.8)