I am using:
CLI Version: 0.18.3 alpha [d710b642]
I usually us Atmel Studio V7 with my Power Debugger and write in ASM. But I have a couple of projects coming up where C/++ Would make more sense (lower response times and more string work)
I have look a fair bit tonight and I can not see a way (or a post online describing) how to get the Power Debugger to work under Ardunio IDE. I am not after using the power debugging features just the UPDI programming.