code: func configLocation() string {
  	// First, check for the "GOPASS_CONFIG" environment variable
  	if cf := os.Getenv("GOPASS_CONFIG"); cf != "" {
  		return cf
  	}
  
  	// Second, check for the "XDG_CONFIG_HOME" environment variable
  	// (which is part of the XDG Base Directory Specification for Linux and
  	// other Unix-like operating sytstems)
  	if xch := os.Getenv("XDG_CONFIG_HOME"); xch != "" {
  		return filepath.Join(xch, "gopass", "config.yml")
  	}
  
  	return filepath.Join(Homedir(), ".config", "gopass", "config.yml")
  }
docs: // configLocation returns the location of the config file
  // (a YAML file that contains values such as the path to the password store)