I need to add a config file to tracker. Debating myself a bit on what the location should be. For the data files, I am currently using a crate called "directories" which helps locate OS-dictated standard directories for such things.
But it's a bit annoying to have things in ~/Library/Application Support/tech.skagedal.tracker – following the macOS standard, rather then just ~/.tracker, or following the XDG standard ~/.config/tracker which seems to be quite common also on macOS for CLI apps.