anchor.diff:  
     depsBuildBuild = [ buildPackages.stdenv.cc ];
     nativeBuildInputs = [ bison flex python3 pkg-config gettext freetype autoreconfHook ];
  -  buildInputs = [ ncurses libusb-compat-0_1 freetype lvm2 fuse libtool ]
  +  buildInputs = [ ncurses libusb-compat-0_1 freetype lvm2 fuse libtool bash ]
       ++ optional doCheck qemu
       ++ optional zfsSupport zfs;
   
  
positive.code:   postInstall = ''
      # Avoid a runtime reference to gcc
      sed -i $out/lib/grub/*/modinfo.sh -e "/grub_target_cppflags=/ s|'.*'|' '|"
    '';
  
    passthru.tests = {
  
negative.code: { lib, stdenv, fetchurl, flex, bison, python3, autoreconfHook, gnulib, libtool, bash
  , gettext, ncurses, libusb-compat-0_1, freetype, qemu, lvm2, unifont, pkg-config
  , buildPackages
  , fetchpatch
  