If you've got a mature, all-encompassing build flow (hierarchical Makefiles, Bazel, etc), then ensuring a required tool is up to date after a pull is very strai

If you've got a mature, all-encompassing build flow (hierarchical Makefiles, Bazel, etc), then ensuring a required tool is up to date after a pull is very straightforward. The weaker your build system, the more you really depend on tools being interpreted scripts so they "just work".