Buck2: Our open source build system

Everyone says buck and bazel are so amazing but honestly, mono repos are unicorns. No one does this. It's useful to no one I know. I keep hearing it's useful to somebody, so it must be really useful when it is, but I've never ever seen buck, bazel or monorepos in real life. And it's been my career to build stuff.

There's quite a few well-known places listed on https://bazel.build/community/users across many industries. I think Buck and Pants and Please (and ...) are not as widely used, but if they had a list to add we'd have even more examples.

I'm sorry to break it to you, but monorepos are extremely common. Doesn't mean they have to be as large but every company I've been at had a monorepo.

And as soon as you have to manage PRs for multiple repos with a new cross-cutting feature or scheduling changes in the correct order you understand why they are so appealing.