Resolving dependencies...
Downloading Takusen-0.8.7...
[1 of 1] Compiling Main             ( /tmp/Takusen-0.8.7-17775/Takusen-0.8.7/Setup.hs, /tmp/Takusen-0.8.7-17775/Takusen-0.8.7/dist/setup/Main.o )

/tmp/Takusen-0.8.7-17775/Takusen-0.8.7/Setup.hs:23:25:
    Module `System.IO.Error' does not export `try'
Failed to install Takusen-0.8.7
Downloading template-haskell-2.4.0.1...
Configuring template-haskell-2.4.0.1...
Building template-haskell-2.4.0.1...
Preprocessing library template-haskell-2.4.0.1...
[1 of 7] Compiling Language.Haskell.TH.Syntax.Internals ( Language/Haskell/TH/Syntax/Internals.hs, dist/build/Language/Haskell/TH/Syntax/Internals.o )
[2 of 7] Compiling Language.Haskell.TH.Syntax ( Language/Haskell/TH/Syntax.hs, dist/build/Language/Haskell/TH/Syntax.o )
[3 of 7] Compiling Language.Haskell.TH.PprLib ( Language/Haskell/TH/PprLib.hs, dist/build/Language/Haskell/TH/PprLib.o )

Language/Haskell/TH/PprLib.hs:54:10:
    Illegal instance declaration for `Show Doc'
      (All instance types must be of the form (T a1 ... an)
       where a1 ... an are *distinct type variables*,
       and each type variable appears at most once in the instance head.
       Use -XFlexibleInstances if you want to disable this.)
    In the instance declaration for `Show Doc'
Failed to install template-haskell-2.4.0.1
cabal: Error: some packages failed to install:
Takusen-0.8.7 failed during the configure step. The exception was:
ExitFailure 1
ta-0.1 depends on template-haskell-2.4.0.1 which failed to install.
template-haskell-2.4.0.1 failed during the building phase. The exception was:
ExitFailure 1