Hi all!
I was wondering if custom environments with Vercel are supported when setting up syncing? I only see the 3 pre-defined options available when trying to setup my sync (production, preview, development). Specifically trying to setup a custom “staging” environment I created in Vercel as the preview environment was giving me issues.
Thanks!
Hi @arimgibson!
Welcome to the Doppler Community!
We do plan to support this, but this feature is very new on their end. They don’t currently have a public API for interacting with custom environments. Once they’ve published the required API endpoints for this, we’ll take a look at adding support for it!
Regards,
-Joel
Gotcha, thanks Joel! Makes a lot of sense 
I did manage to get the preview environment working, so despite another bug on their side I’m in a good place. Appreciate you!
Hello, is there any progress? We’ve been manually overriding preview-specific env variables in CI for each preview deploy (without doppler, just hardcoded params passed to vercel build and vercel deploy) for a while but now Supabase introduced branching with integration to Vercel custom environments which makes it tempting to start using them but also almost a necessity since syncing three different tools gets very complicated.
Also interested in syncing Vercel custom environments, so please give an update on this topic
Hello,
Apologies for the delay here. We recently added support for Vercel custom environments, so this should be working!
Is there any documentation how to set it up?
Edit: I see how to add a long-living custom environment synchronization but I still don’t see support for branch-specific env variables:
