Function xdg_basedir::dirs::get_data_home_from_env

pub fn get_data_home_from_env<'a, F>(get_env_var: &'a F) -> Result<PathBuf> where F: Fn(&'a str) -> Option<OsString>

Get the data home directory given a closure that returns the the value of an environment variable. This method allows having a custom environment.

If $XDG_DATA_HOME is not set, it returns $HOME/.local/share.