Yes, definitely, I just want to make sure the extension interface is solid before encouraging others to use it.

Originally posted by @hadley in #349 (comment)

Would it be possible to resurrect pins-user's ability to develop extensions for data repositories beyond some of the ones that are covered (e.g. S3, GCS, Azure etc.)?

Context: pre 1.0 version, pins used to provide support for users to write extensions for pinning to not-broadly-supported boards. In conversation with @hadley ~ 2 years ago, my understanding was that, the ability to extend pins to other data repos (boards) will be restored. For big organizations with variety of less common data platforms, the uniformity that pins could bring (no matter which back-end data platform) is of great value.