anchor.diff:  , libgcrypt
   , libgpg-error
   , libksba
  -, libusb-compat
  +, libusb
   , npth
   , openldap
   , pcsclite
  
positive.code:     libgcrypt
      libgpg-error
      libksba
      libusb-compat
      npth
      openldap
      readline
  
negative.code: 
    postPatch = ''
      sed -i 's,"libpcsclite\.so[^"]*","${pcsclite}/lib/libpcsclite.so",g' scd/scdaemon.c
    '';
  
    preConfigure = ''
      export CPPFLAGS="$CPPFLAGS -I$(echo "${libusb}"/include/*)"
    '';
  
    configureFlags = [
  