anchor.diff:    selfApplySetupHook = true;
   
     postPatch = ''
  +    grep -q '#!/usr/bin/env python' gio/tests/gengiotypefuncs.py
       sed -i gio/tests/gengiotypefuncs.py \
         -e 's,#!/usr/bin/env python.*,#!${python3.interpreter},'
     '';
  
positive.code:   '';
  
    channel = "2.58";
    version = "${channel}.1";
  in
  stdenv.mkDerivation rec {
    name = "glib-${version}";
  
negative.code:       ! find "$out" -name "$i"
        install -D -m 644 -v m4macros/"$i" "$out"/share/aclocal/"$i"
      done
    '';
  
    passthru = {
  