Setup.hs

#!/usr/bin/env runhaskell

import Distribution.PackageDescription
import Distribution.Simple
import Distribution.Simple.LocalBuildInfo
import Distribution.Simple.Program
import qualified Distribution.Verbosity as Verbosity
import Data.List

main = defaultMainWithHooks defaultUserHooks {
         hookedPrograms = [pyConfigProgram],
         postConf=configure
       }

pyConfigProgram = (simpleProgram "python") 

configure _ _ _ lbi = do
  mb_bi <- pyConfigBuildInfo Verbosity.normal lbi
  writeHookedBuildInfo "MissingPy.buildinfo" (mb_bi,[])

-- Populate BuildInfo using python tool.
pyConfigBuildInfo verbosity lbi = do
  (pyConfigProg, _) <- requireProgram verbosity pyConfigProgram
--                       (orLaterVersion $ Version [2] []) (withPrograms lbi)
                       (AnyVersion) (withPrograms lbi)
  let python = rawSystemProgramStdout verbosity pyConfigProg
  libDir       <- python ["-c", "from distutils.sysconfig import *; print get_python_lib()"]
  incDir       <- python ["-c", "from distutils.sysconfig import *; print get_python_inc()"]
  confLibDir   <- python ["-c", "from distutils.sysconfig import *; print get_config_var('LIBDIR')"]
  libName      <- python ["-c", "import sys; print \"python%d.%d\" % (sys.version_info[0], sys.version_info[1])"]
  return $ Just emptyBuildInfo {
    extraLibDirs   = lines confLibDir ++ lines libDir,
    includeDirs    = lines incDir ++ ["glue"],
    extraLibs      = lines libName
  }