    {-# LANGUAGE CPP #-}
    #ifdef __GLASGOW_HASKELL__
    {-# LANGUAGE Safe #-}
    #endif
    -----------------------------------------------------------------------------
    -- |
    -- Module      :  System.Posix
    -- Copyright   :  (c) The University of Glasgow 2002
    -- License     :  BSD-style (see the file libraries/base/LICENSE)
    --
    -- Maintainer  :  libraries@haskell.org
    -- Stability   :  provisional
    -- Portability :  non-portable (requires POSIX)
    --
    -- POSIX support
    --
    -----------------------------------------------------------------------------

    module System.Posix (
      module System.Posix.Types,
      module System.Posix.Signals,
      module System.Posix.Directory,
      module System.Posix.Files,
      module System.Posix.Unistd,
      module System.Posix.IO,
      module System.Posix.Env,
      module System.Posix.Process,
      module System.Posix.Temp,
      module System.Posix.Terminal,
      module System.Posix.Time,
      module System.Posix.User,
      module System.Posix.Resource,
      module System.Posix.Semaphore,
      module System.Posix.SharedMem,
      module System.Posix.DynamicLinker,
    -- XXX 'Module' type clashes with GHC
    --  module System.Posix.DynamicLinker.Module
     ) where

    import System.Posix.Types
    import System.Posix.Signals
    import System.Posix.Directory
    import System.Posix.Files
    import System.Posix.Unistd
    import System.Posix.Process
    import System.Posix.IO
    import System.Posix.Env
    import System.Posix.Temp
    import System.Posix.Terminal
    import System.Posix.Time
    import System.Posix.User
    import System.Posix.Resource
    import System.Posix.Semaphore
    import System.Posix.SharedMem
    -- XXX: bad planning, we have two constructors called "Default"
    import System.Posix.DynamicLinker hiding (Default)
    --import System.Posix.DynamicLinker.Module

    {- TODO

    Here we detail our support for the IEEE Std 1003.1-2001 standard.  For
    each header file defined by the standard, we categorise its
    functionality as

     - "supported"

       Full equivalent functionality is provided by the specified Haskell
       module.

     - "unsupported" (functionality not provided by a Haskell module)

       The functionality is not currently provided.

     - "to be supported"

       Currently unsupported, but support is planned for the future.

    Exceptions are listed where appropriate.

    Interfaces supported
    --------------------

    unix package:

    dirent.h 	System.Posix.Directory
    dlfcn.h 	System.Posix.DynamicLinker
    errno.h 	Foreign.C.Error
    fcntl.h 	System.Posix.IO
    signal.h	System.Posix.Signals
    sys/stat.h	System.Posix.Files
    sys/times.h	System.Posix.Process
    sys/types.h	System.Posix.Types (with exceptions...)
    sys/utsname.h	System.Posix.Unistd
    sys/wait.h	System.Posix.Process
    termios.h	System.Posix.Terminal (check exceptions)
    unistd.h	System.Posix.*
    utime.h		System.Posix.Files
    pwd.h		System.Posix.User
    grp.h		System.Posix.User
    stdlib.h: 	System.Posix.Env (getenv()/setenv()/unsetenv())
    		System.Posix.Temp (mkstemp())
    sys/resource.h: System.Posix.Resource (get/setrlimit() only)

    regex-posix package:

    regex.h		Text.Regex.Posix

    network package:

    arpa/inet.h
    net/if.h
    netinet/in.h
    netinet/tcp.h
    sys/socket.h
    sys/un.h

    To be supported
    ---------------

    limits.h	(pathconf()/fpathconf() already done)
    poll.h
    sys/resource.h  (getrusage(): use instead of times() for getProcessTimes?)
    sys/select.h
    sys/statvfs.h	 (?)
    sys/time.h	(but maybe not the itimer?)
    time.h		(System.Posix.Time)
    stdio.h		(popen only: System.Posix.IO)
    sys/mman.h

    Unsupported interfaces
    ----------------------

    aio.h
    assert.h
    complex.h
    cpio.h
    ctype.h
    fenv.h
    float.h
    fmtmsg.h
    fnmatch.h
    ftw.h
    glob.h
    iconv.h
    inttypes.h
    iso646.h
    langinfo.h
    libgen.h
    locale.h	(see System.Locale)
    math.h
    monetary.h
    mqueue.h
    ndbm.h
    netdb.h
    nl_types.h
    pthread.h
    sched.h
    search.h
    semaphore.h
    setjmp.h
    spawn.h
    stdarg.h
    stdbool.h
    stddef.h
    stdint.h
    stdio.h		except: popen()
    stdlib.h	except: exit(): System.Posix.Process
    			free()/malloc(): Foreign.Marshal.Alloc
    			getenv()/setenv(): ?? System.Environment
    			rand() etc.: System.Random
    string.h
    strings.h
    stropts.h
    sys/ipc.h
    sys/msg.h
    sys/sem.h
    sys/shm.h
    sys/timeb.h
    sys/uio.h
    syslog.h
    tar.h
    tgmath.h
    trace.h
    ucontext.h
    ulimit.h
    utmpx.h
    wchar.h
    wctype.h
    wordexp.h

    -}