pub(crate)fnget_timezone_inner()->Result<String, crate::GetTimezoneError>{// see https://gitlab.gnome.org/GNOME/evolution-data-server/-/issues/19
letmut contents =std::fs::read_to_string("/var/db/zoneinfo")?;// Trim to the correct length without allocating.
contents.truncate(contents.trim_end().len());Ok(contents)}