Why not Python? I primarily program in C++ but I see it as a decent choice as Python is available in almost all recent machines. Of course Windows is a notable exception but given it's a tool for developers I guess Python should be present.
2. Terrible installation UX.
The number of issues we've had with pre-commit because it's written in Python and Python tooling breaks constantly...
In fairness, the latter point may be finally solved by using `uv` and `uv tool install`. Performance is still a major issue though. Yamllint is easily the slowest linter we use.
(I'm tempted to try rewriting it in Rust with AI.)
Also format-on-save is a common workflow.
Performance only matters if you're doing something compute- or disk-intensive, and then only if the libraries you're using are Python all the way down. (AI programming, at least the kind that most of us do--I don't know about places like OpenAI) is generally done with Python using libraries that use some compiled language under the hood.
And in this case--a linter--performance is almost certainly never an issue.
Performance only matters if you care about performance, and I do care about performance. If you don't, fine I guess.