I've installed sitecore 9 and I am using Unicorn to sync my developer items.
Do I create all my languages on my local machine an add the "/sitecore/system/Languages" to my Unicorn synchronization, so that I configure the languages only once like language fallback?
Is that the right approach or I am missing something?
Yep, you can. I normally do.
Just be aware of this; I've been in one situation in the past where additional languages were added on a higher environment - which would mess things up.
But go ahead and do it, just make sure this is coordinated and known.
Yes you can sync languages to Unicorn And it also depends on the synchronization process you are following.
Unicorn One Time Sync: Creates/updates item if item is not available in Sitecore environment Unicorn Always : Always creates/updates the item. Make sure to follow the above scenarios to prevent overriding changes.
