There are numerous way why supporting a CLI based representation which in the end will make it up into /etc/curlrc

As mentioned in the subtasks users have found that there are missing features which tend to break operation in certain environments.

• Use source interace for all calls curl is involved to force traffic on a given interface
• disable SSH host key checking when e.g. uploading files via commit-archive
• Use source interface in DNS lookups (imagine split-horizon DNS deployments)

All should be manifested in a new CLI node under system

system {
    options { 
        # I do not want to lock in on curl for this node
        http-client {
            source-interface eth0
            source-address 1.1.1.1
        }
        ssh-client {
            source-address 1.1.1.1
            private-key {
                name foo {
                    key sdfklasjdhfjks=
                    type rsa
                }
            }
        }
    }
}

I do not know if it's possible to preload SSH keys or not in curl - need to check. Another idea would be a no-host-key-validation option to disable it.