alt Hacker NewsMy preference is to use the build system to create built artifacts, and I consider the build/ directory to be a built artifact. Wrangling Git into doing the first fundamental build step is off, in my opinion.
However, if you disagree, my favorite "Git keep" filename is "README.md". Why is this otherwise empty directory here, how does it fit into my source tree, how is it populated, and so forth.
One of my pet peeves with the latest AI wave is the time we spend creating files to help AI coding agents, but don't give the same consideration to the humans who have to maintain and update our code.
Both points here are appreciated. One that a README file as a "placeholder" for a directory gives the opportunity to describe why said empty directory exists. I would be slightly concerned though if my build process picked up this file during packaging. But that's probably a minor concern and your point stands.
Additionally, the AI comment is ironic as well. It's like we're finally writing good documentation for the sake of agents, in a way that we should have been writing all along for other sentient consumers. It's funny to see documentation now as basically the horse instead of the cart.