anchor.diff:      libgcrypt
       libgpg-error
       libksba
  -    libusb-compat
  +    libusb
       npth
       openldap
       readline
  
positive.code: , libgcrypt
  , libgpg-error
  , libksba
  , libusb-compat
  , npth
  , openldap
  , pcsclite
  
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 = [
  