Yep, I wrote both. The difference is that letsencrypt-nosudo doesn't have access to your private user account key, so you need to manually sign the requests. Acme-tiny does have access to your private user account key, so it signs the requests for you.
I was getting a lot of requests to automate letsencrypt-nosudo, so I did with this client rather than starting to ask for private keys in letsencrypt-nosudo.
Great approach. You rarely see people these days willing to push a new project to solve a similar problem rather than changing the old one to suit some feature request demand.
The script is great, but on that decision alone you really deserve a slow clap.
I was getting a lot of requests to automate letsencrypt-nosudo, so I did with this client rather than starting to ask for private keys in letsencrypt-nosudo.