> Nix requires only its configuration (Nix's expression) to be in monorepo. At the opposite, Bazel design is centered around the source code being in monorepo.

> Nix requires only its configuration (Nix's expression) to be in monorepo. At the opposite, Bazel design is centered around the source code being in monorepo. That is a major difference. Modern Bazel rule sets are more pragmatic than that. Python rules can pull packages using `pip install`, java rules can pull from Maven, rust rules from crates.io, etc.