Resolving dependencies...
Downloading Chitra-0.2.2...
Configuring Chitra-0.2.2...
Building Chitra-0.2.2...
Preprocessing executable 'Chitra' for Chitra-0.2.2...
[ 1 of 10] Compiling Utilities.ParseByteString ( Utilities/ParseByteString.hs, dist/build/Chitra/Chitra-tmp/Utilities/ParseByteString.o )

Utilities/ParseByteString.hs:35:60:
    Could not deduce (Eq a) arising from a use of `/='
    from the context (Num a)
      bound by the type signature for
                 parseByteString :: Num a => [a] -> BS.ByteString -> [Int]
      at Utilities/ParseByteString.hs:32:20-59
    Possible fix:
      add (Eq a) to the context of
        the inferred type of cleanup :: [b] -> [b]
        or the type signature for
             parseByteString :: Num a => [a] -> BS.ByteString -> [Int]
    In the first argument of `(.)', namely `(/= 0)'
    In the first argument of `filter', namely `((/= 0) . fst)'
    In the second argument of `(.)', namely `filter ((/= 0) . fst)'

Utilities/ParseByteString.hs:37:50:
    Could not deduce (Eq a) arising from a use of `getActionList'
    from the context (Num a)
      bound by the type signature for
                 parseByteString :: Num a => [a] -> BS.ByteString -> [Int]
      at Utilities/ParseByteString.hs:32:20-59
    Possible fix:
      add (Eq a) to the context of
        the type signature for
          parseByteString :: Num a => [a] -> BS.ByteString -> [Int]
    In the first argument of `getActions', namely
      `(getActionList list)'
    In the expression: getActions (getActionList list)
    In an equation for `actionList':
        actionList = getActions (getActionList list)
Failed to install Chitra-0.2.2
cabal: Error: some packages failed to install:
Chitra-0.2.2 failed during the building phase. The exception was:
ExitFailure 1