With incremental recursion rsync only knows the total near the end, so the bar showed
no ETA for most of the backup. Save the file count as a third line of the state file
and use it as an estimate until rsync reports the real total.
Write the completion time and backup directory to
$XDG_STATE_HOME/simple_backup/last_backup after each successful backup
(as the target user when run as root), for status bar reminders.
--last-backup prints it.
Configure ruff in pyproject.toml and apply its fixes: modern annotations
(X | None, builtin generics, collections.abc), sorted imports, explicit
stacklevel in test warnings.
On a terminal, run rsync with --info=progress2 and draw its updates as a
progress bar on stderr. The ETA is estimated locally, since rsync reports
the elapsed time when a file finishes. Disable it with --no-progress.
The config values are now a TypedDict, so check inputs for None before sorting, use literal keys and use ConfigArgs as the fake _read_config() return type.
Test how command line and config values are combined, the exit codes for an incomplete SSH setup and a bad config, and the user detection under sudo/doas (simulated by patching geteuid and the environment).
Fuxino
