$NetBSD: patch-an,v 1.3 2008/03/24 22:40:23 kristerw Exp $

--- libraries/unix/System/Posix/Env.hsc.orig	2008-03-24 17:09:39.000000000 +0100
+++ libraries/unix/System/Posix/Env.hsc	2008-03-24 17:10:41.000000000 +0100
@@ -81,7 +81,7 @@
 
 unsetEnv name = withCString name c_unsetenv
 
-foreign import ccall unsafe "unsetenv"
+foreign import ccall unsafe "__hsunix_unsetenv"
    c_unsetenv :: CString -> IO ()
 #else
 unsetEnv name = putEnv (name ++ "=")