Having it happen automatically is what I was after, and that isn’t particularly easy to achieve. There must surely be a better way than my nasty hack, but I do now have automatic backups of iPhone photos onto a nas:
A VM running macOS and a script. Open Photos.app and sync with ‘Download Originals’ checked. Quit Photos.app and rsync the folder ‘Originals’ out of the app bundle and onto a NAS. Once finished, reopen Photos.app.
It’s quite horrible getting the script to run as permissions get tricky with chrontab, so I used Lingon X to schedule it.
A VM running macOS and a script. Open Photos.app and sync with ‘Download Originals’ checked. Quit Photos.app and rsync the folder ‘Originals’ out of the app bundle and onto a NAS. Once finished, reopen Photos.app.
It’s quite horrible getting the script to run as permissions get tricky with chrontab, so I used Lingon X to schedule it.