When I left Google in the mid 2010s, there were a couple unusual constraints: 1. They had the majority of their code in a vast++ monorepo. 2. There was a policy that forbade having code from this monorepo on your laptop.

Most companies and projects have orders of magnitude less code, and don't restrict where that code can be stored. It's interesting to learn about Cider and the other things Google built to address their unusual situation, but it's worth keeping in mind that their approach probably isn't ideal in ~most modern dev scenarios.