@enough-analyst-54434 I’m incredibly surprised that

fs_util

takes 2 additional minutes to build after `engine`; its novel code is trivial, so the only thing I can think is that it’s hyper-optimising when linking. Given what the binary does is 100% IO bound, cranking down the optimisation level of it until linking is ~instant may fix all of the above problems. Running some local builds to see what’s going on with all of that time now…