From the maintainer Li Haoyi: I'm putting a 500USD bounty on this issue, payable by bank transfer on a merged PR implementing this.

This has come up in both Netty and Mockito case studies, so we should properly support it with a built in Mill plugin

Will likely end up looking similar to our support for linters like ErrorProne and Checkstyle, as well as @lolgab's mill-mima plugin