Looks cool! Checking it out now. I have a growing interest in Nim, how do you like the language?

One suggestion I have is to output in justified columns for the non-list output, like how ls does.. gives me a headache to look at everything jumbled together.

And one final note, having short hand command flags is necessary if you want a useful command line tool. Like '-s' short for '--salad' or '-c' for '--count' etc