Comment by eru

> That feels like cargo-culting the toolchain [...]

Pun intended?

Jokes aside, what you describe is a common pattern. It's also why Google internally they used to get decent speedups from rewriting some old C++ project in Go for a while: the magic was mostly in the rewrite-with-hindsight.

If you put effort into it, you can also get there via an incremental refactoring of an existing system. But the rewrite is probably easier to find motivation for, I guess.