In the near future, we will be adding more build rules in our build system. The mongo_src_rules.bzl file is now over 2500 lines of code. It makes it somewhat difficult to find what custom build rules we have defined for our R&D community.

The proposed solution is to create a new directory named rules in //bazel where each file in rules directory that has a suffix of _rule.bzl represents a single build rule. Over time, depending on the rules we have, we can group rules based on functionality.