anchor.diff:  ;; used in get_wch.lisp
   ;; wint_t needs to be a signed int to represent a negative WEOF value.
   (cffi:defctype wint_t :int32)
  +;;(cffi:defctype wint_t :uint32)
   
   ;; typedef chtype attr_t;
   ;; TODO: rename this to attr_t
  
positive.code:           "libncurses.dylib"
            "libcurses.dylib"))
      (:unix
       (:or "libncurses.so.6.2"
            "libncurses.so.6.1"
            "libncurses.so.6.0"
            "libncurses.so.6"
  
negative.code:           "libncursesw.dylib"
            "libcurses.dylib"))
      (:unix
       (:or "libncursesw.so.6.3"
            "libncursesw.so.6.2"
            "libncursesw.so.6.1"
            "libncursesw.so.6.0"
            "libncursesw.so.6"
  