Nano Every SPI

How can I make Nano Every work with the Radiohead library?

Arduino: 1.8.9 (Windows Store 1.8.21.0) (Windows 10), Board: "Arduino Nano Every, ATMEGA328"

C:\Users\jmtra\Documents\Arduino\libraries\RadioHead-master\RH_Serial.cpp:11:11: fatal error: HardwareSerial.h: No such file or directory

#include <HardwareSerial.h>

^~~~~~~~~~~~~~~~~~

compilation terminated.

exit status 1
Error compiling for board Arduino Nano Every.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

RH (at least as of the version you have) is not compatible with the new megaAVR parts. There may (or may not) be an updated version available. There is probably more to fix than the reference to HardwareSerial.

It's not clear to me which of the multiple RadioHead github repos is the most up to date version, at least at a glance.

Thanks for the advice. I'll look for another tiny board that I can use with these packet radios...