Resolving dependencies...
Downloading thrist-0.0...
Configuring thrist-0.0...
Building thrist-0.0...
Preprocessing library thrist-0.0...
[1 of 1] Compiling Data.Thrist      ( Data/Thrist.hs, dist/build/Data/Thrist.o )

Data/Thrist.hs:11:29:
    Illegal symbol '.' in type
    Perhaps you intended -XRankNTypes or similar flag
    to enable explicit-forall syntax: forall <tvs>. <type>
Failed to install thrist-0.0
cabal: Error: some packages failed to install:
thrist-0.0 failed during the building phase. The exception was:
ExitFailure 1