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Consider the following program:

module Main where

import Global (Global, global, GlobalSpec(Temporary))
import Unsafe(unsafePerformIO)
import IO(Handle)
import Socket

debugSocketHandleGlobal :: Global Handle
debugSocketHandleGlobal = global (unsafePerformIO openport) Temporary
  where
    openport = catch (connectToSocket "localhost" 33) errorhandler
    errorhandler _ = error "could not connect to debugging server (i.e. to eclipse)" 

main = do
  print 42

Compiling this program with PAKCS results in the following error:

Prelude> :l Main.curry 
[1 of 8] Skipping  Prelude          ( /net/medoc/home/pakcs/amd64/pakcs/lib/Prelude.curry, /net/medoc/home/pakcs/amd64/pakcs/lib/.curry/Prelude.fcy )
[2 of 8] Skipping  Char             ( /net/medoc/home/pakcs/amd64/pakcs/lib/Char.curry, /net/medoc/home/pakcs/amd64/pakcs/lib/.curry/Char.fcy )
[3 of 8] Skipping  Global           ( /net/medoc/home/pakcs/amd64/pakcs/lib/Global.curry, /net/medoc/home/pakcs/amd64/pakcs/lib/.curry/Global.fcy )
[4 of 8] Skipping  IO               ( /net/medoc/home/pakcs/amd64/pakcs/lib/IO.curry, /net/medoc/home/pakcs/amd64/pakcs/lib/.curry/IO.fcy )
[5 of 8] Skipping  System           ( /net/medoc/home/pakcs/amd64/pakcs/lib/System.curry, /net/medoc/home/pakcs/amd64/pakcs/lib/.curry/System.fcy )
[6 of 8] Skipping  Socket           ( /net/medoc/home/pakcs/amd64/pakcs/lib/Socket.curry, /net/medoc/home/pakcs/amd64/pakcs/lib/.curry/Socket.fcy )
[7 of 8] Skipping  Unsafe           ( /net/medoc/home/pakcs/amd64/pakcs/lib/Unsafe.curry, /net/medoc/home/pakcs/amd64/pakcs/lib/.curry/Unsafe.fcy )
[8 of 8] Compiling Main             ( Main.curry, .curry/Main.fcy )

Main.curry, line 14.1: Warning:
    Top-level binding with no type signature: main :: Prelude.IO ()
ERROR in "Main.debugSocketHandleGlobal": Function "Global.global" is not allowed in this context!
ERROR during compilation of program "Main"!