This can be any key/value pair as described in https://github.com/justjanne/powerline-go.
attribute set of (boolean or signed integer or string or list of string)
{ }
{
hostname-only-if-ssh = true;
numeric-exit-codes = true;
cwd-max-depth = 7;
ignore-repos = [ "/home/me/big-project" "/home/me/huge-project" ];
}