anchor.diff:  
     nativeBuildInputs =
       [
  -      autoconf213
  +      autoconf
         cargo
         gnused
         llvmPackages.llvm # llvm-objdump
  
positive.code: { lib, stdenv, pkg-config, pango, perl, python3, zip
  , libjpeg, zlib, dbus, dbus-glib, bzip2, xorg
  , freetype, fontconfig, file, nspr, nss
  , yasm, libGLU, libGL, sqlite, unzip, makeWrapper
  , hunspell, libevent, libstartup_notification
  , libvpx
  , icu70, libpng, glib, pciutils
  , autoconf213, which, gnused, rustPackages, rustPlatform
  , rust-cbindgen, nodejs, nasm, fetchpatch
  , gnum4
  , gtk3, wrapGAppsHook
  
negative.code:     rm -f configure
      rm -f js/src/configure
      rm -f .mozconfig*
      # this will run autoconf
      configureScript="$(realpath ./mach) configure"
      export MOZBUILD_STATE_PATH=$(pwd)/mozbuild
  
  