Function seeds 

pub fn seeds(
    home: Option<&str>,
    seeds: &[String],
    auth_for: &dyn Fn(&str) -> Option<String>,
    user: Option<&str>,
) -> Vec<Check>

The fork check for every seed .choir/config names (D80), against the node home is.

auth_for is the caller’s own credential rule, so a seed is handed a credential exactly when every other command would hand it one.