Resolving dependencies...
Configuring mtl-2.2.1...
Configuring text-1.2.2.1...
Building mtl-2.2.1...
Building text-1.2.2.1...
Installed mtl-2.2.1
Installed text-1.2.2.1
Configuring parsec-3.1.11...
Configuring blaze-builder-0.4.0.2...
Building parsec-3.1.11...
Building blaze-builder-0.4.0.2...
Installed blaze-builder-0.4.0.2
Configuring blaze-markup-0.7.1.1...
Building blaze-markup-0.7.1.1...
Installed parsec-3.1.11
Installed blaze-markup-0.7.1.1
Configuring blaze-html-0.8.1.3...
Building blaze-html-0.8.1.3...
Installed blaze-html-0.8.1.3
Downloading ghc-core-html-0.1.3...
Configuring ghc-core-html-0.1.3...
Building ghc-core-html-0.1.3...
Failed to install ghc-core-html-0.1.3
Build log ( /home/builder/.cabal/logs/ghc-core-html-0.1.3.log ):
cabal: Entering directory '/tmp/cabal-tmp-1835/ghc-core-html-0.1.3'
Configuring ghc-core-html-0.1.3...
Building ghc-core-html-0.1.3...
Preprocessing executable 'ghc-core-html' for ghc-core-html-0.1.3...
[1 of 3] Compiling Paths_ghc_core_html ( dist/build/autogen/Paths_ghc_core_html.hs, dist/build/ghc-core-html/ghc-core-html-tmp/Paths_ghc_core_html.o )
[2 of 3] Compiling GhcCore.Parser   ( GhcCore/Parser.hs, dist/build/ghc-core-html/ghc-core-html-tmp/GhcCore/Parser.o )

GhcCore/Parser.hs:139:13: error:
    • Non type-variable argument in the constraint: Stream s m Char
      (Use FlexibleContexts to permit this)
    • When checking the inferred type
        parseLevel :: forall (m :: * -> *) u s a.
                      (Stream s m Char, Num a, Eq a) =>
                      a -> ParsecT s u m [Char]
      In an equation for ‘typeSignature’:
          typeSignature
            = parseLevel (0 :: Int)
            where
                parseLevel n
                  | n == 0
                  = do { left <- many (noneOf "()=");
                         .... }
                  | otherwise
                  = do { left <- many $ noneOf "()";
                         .... }
      In an equation for ‘tokenify’:
          tokenify
            = either (error . show) id . runCoreParser (manyTill tok eof) () ""
            where
                tok = choice [spaceTok, ....] <?> "token"
                spaceTok
                  = Spaces
                    <$>
                      many1
                        (oneOf
                           " \n\
                           \\t")
                number = Number <$> many1 digit
                funDef
                  = FunDef
                    <$>
                      try
                        (string "\\" >> spaces
                         >> manyTill (try funParamAt <|> funParam) (string "->"))
                ....
cabal: Leaving directory '/tmp/cabal-tmp-1835/ghc-core-html-0.1.3'
cabal: Error: some packages failed to install:
ghc-core-html-0.1.3 failed during the building phase. The exception was:
ExitFailure 1