"Devtools must be open source" argues LLMs removed the last excuse.

This essay hit HN on August 3 with 713 points, and the argument is sharper than the usual advocacy. The historical barrier to inspecting and patching your daily tools was never licensing, it was build friction: unfamiliar toolchains, missing deps, undocumented flags. Agent assistance collapses that cost, so you can clone a repo, get it building, and land a local fix in the time it used to take to read CONTRIBUTING. Which reframes closed devtools as a materially larger tax than they were two years ago. I buy it. I've patched two dependencies this year that I'd have just worked around before.