Relevant is Figma's recent experience fixing this issue, they didn't end up using IWYU but made their own tool which unfortunately doesn't appear to be open sou

Relevant is Figma's recent experience fixing this issue, they didn't end up using IWYU but made their own tool which unfortunately doesn't appear to be open source: https://www.figma.com/blog/speeding-up-build-times/ https://www.figma.com/blog/speeding-up-build-times/ I'm surprised TFA didn't see any improvement though. It makes me wonder if there's bigger opportunities with the build graph shape preventing them from getting optimal incremental rebuilds.