The best part: all of the utils in the tool chains "evolve" and so your one script has to be regularly modified and kept up to date. A project that "just worked" but has been on ice for several months, will now not even build after you pull updates etc. It's infuriating. I used to work on a front-end team, and a good 20% of our time was spent babying the build chain, I kid you not.
