setup

type Change struct {
	Path    string
	Removed bool
}

type Command struct {
	Name    string
	Summary string
	Sub     []string // subcommands, such as create of migrate
	Args    string   // what a positional argument completes to: "dir" or ""
	Flags   []Flag
}

type Flag struct {
	Name    string
	Summary string
	Bool    bool
	Dir     bool     // completes to directories
	Values  []string // completes to these values
	List    bool     // Values separated by commas
}

type Options struct {
	Home   string // home directory
	Config string // XDG_CONFIG_HOME, <home>/.config when empty
	Shell  string
	Alias  bool // add pgo
	Remove bool // take everything out
}