Question

I just want to read (and maybe write) UTF-8 data. haskell.org still advertises System.Streams which does not compile with recent ghc:

% runhaskell Setup.lhs configure
Configuring Streams-0.2.1...
runhaskell Setup.lhs build
Preprocessing library Streams-0.2.1...
Building Streams-0.2.1...
[10 of 45] Compiling System.FD        ( System/FD.hs, dist/build/System/FD.o )

System/FD.hs:138:22:
    Couldn't match expected type `GHC.IOBase.FD'
           against inferred type `FD'
    In the first argument of `fdType', namely `fd'
    In a 'do' expression: fd_type <- fdType fd
    In the expression:
        let
          oflags1 = case mode of
                      ReadMode -> ...
                      WriteMode -> ...
                      ReadWriteMode -> ...
                      AppendMode -> ...
          binary_flags | binary = o_BINARY
                       | otherwise = 0
          oflags = oflags1 .|. binary_flags
        in
          do fd <- fdOpen filepath oflags 438
             fd_type <- fdType fd
               when (mode == WriteMode && fd_type == RegularFile)
             $ do fdSetFileSize fd 0
             ....

Similar problem with Streams 0.1. I cannot get more recent versions since the official site is down:

% wget http://files.pupeno.com/software/streams/Streams-0.1.7.tar.bz2
--2009-07-30 15:36:14--  http://files.pupeno.com/software/streams/Streams-0.1.7.tar.bz2
Resolving files.pupeno.com... failed: Name or service not known.
wget: unable to resolve host address `files.pupeno.com'

A better solution? darcs source code?

Answer 1

Use the utf8-string or the more recent text package.

View the list of packages on hackage.