plugin

type DefaultHandler struct {
	ValidPrefixes []string
}

type Handler interface {
	// exists at the given filename, or a boolean false.
	// Lookup will iterate over a list of given prefixes
	// in order to recognize valid plugin filenames.
	// The first filepath to match a prefix is returned.
	Lookup(filename string) (string, bool)
	// Execute receives an executable's filepath, a slice
	// of arguments, and a slice of environment variables
	// to relay to the executable.
	Execute(executablePath string, cmdArgs, environment []string) error
}