code: func configLocations() []string {
  	l := []string{}
  	if cf := os.Getenv("GOPASS_CONFIG"); cf != "" {
  		l = append(l, cf)
  	}
  	if xch := os.Getenv("XDG_CONFIG_HOME"); xch != "" {
  		l = append(l, filepath.Join(xch, "gopass", "config.yml"))
  	}
  	l = append(l, filepath.Join(Homedir(), ".config", "gopass", "config.yml"))
  	l = append(l, filepath.Join(Homedir(), ".gopass.yml"))
  	return l
  }
docs: // configLocations returns the possible locations of gopass config files,
  // in decreasing priority