anchor.diff:  
       substituteInPlace src/bin/e_import_config_dialog.c \
         --replace "e_prefix_bin_get()" "\"${efl}/bin\""
  +
  +    substituteInPlace src/modules/everything/evry_plug_calc.c \
  +      --replace "ecore_exe_pipe_run(\"bc -l\"" "ecore_exe_pipe_run(\"${bc}/bin/bc -l\""
     '';
   
     mesonFlags = [ "-Dsystemdunitdir=lib/systemd/user" ];
  
positive.code: 
    buildInputs = [
      alsaLib
      bzip2
      efl
      gdbm
  
negative.code: { stdenv, fetchurl, meson, ninja, pkgconfig, gettext, alsaLib, bc,
    bzip2, efl, gdbm, libXdmcp, libXrandr, libcap, libffi,
    libpthreadstubs, libxcb, luajit, mesa, pam, pcre, xcbutilkeysyms,
    xkeyboard_config,
  
    bluetoothSupport ? true, bluez5,
    pulseSupport ? !stdenv.isDarwin, libpulseaudio,
  