Sup is a very nice tool and a good starting point to implement ansible alike functionality. There are some problems with sup I think make it worth to port it here.

• Sup is somewhat abandonware since pressly is gone, there is a number of PRs and last commit was year ago.
• Sup SSH lib is not as good as this
  • no keepalives - cannot use for a long living session on AWS and other clouds
  • no context - cannot use in a server
• Implementation of main function whole flow can be improved the @sitano way
• The idea of reading ssh config files is broken it's just to complex it fails to deliver what it suggests it provides

Idea:

• Fork sup
• Go over PRs and merge what makes sense
• Create sup package here
• Port the supfile model - the yaml
• Port, refactor and add context support in the main sup loop
• Replace SSH layer with our client
• Rework the way SSH is configured (I like ssh-agent and I like auto loading of certificates) drop ssh_config reading
• Port cli

It will be nice if go-sshtools can read .ssh config so no other configration will be needed if user already have connections configured.