There’s no equivalent OSS implementation of a multi language lock file like Brazil’s. You have to build your own or go with a monorepo tool like bazel. Amazonians take reproducibility for granted because of Brazil.

You're talking "Bazel" right? No "r" pronounced like the herb "basil."

Or is there some other framework named "Brazil?"

Autocorrect gone viral?

Brazil is an internal tool used at Amazon.

NixOS is an equivalent and it does not require a mono repo.

I’d be happy if I’m wrong about this but I don’t think you can get a reproducible Node.JS build or python build from NixOS out the box. You need to build something on top of it.