Greetings Cameleers,
Here’s another heads up for all opam users: Opam 102: Pinning Packages, our latest blog post breaking down opam for the community; as a keen eye would have already guessed, today’s subject is package pinning!
We hope that this may be useful to anybody curious about getting acquainted with opam’s pins. This article is made for whom wonders how they work and when they are useful to be aware of.
Hoping that it may serve as a reference for all newcomers to the ecosystem.
We appreciate and are thankful for every reader, we welcome all your feedback, right here, in this thread. 
Kind regards,
The OCamlPro Team