As a longtime user of duplicity/duply, I discovered restic a few days ago. I also found https://github.com/maxkueng/restique but I overlooked the Rescript utility. So I wrote my own:
I first tried with bash but I really am not sure how to correctly handle spaces in arguments, so I went with Python3.
restaround is a bit different from Rescript or duply in that it does not make use of environment variables at all.
I will definitively look closer at Rescript and maybe use some of its ideas.