There is an environment (cf. rdar://84212106) where running python3 is failing due to some low level issues that are yet to be understood. It seems like these may be happening when resolving symlinks, so I want to try reducing the amount of resolving needed.
Created attachment 441777 [details] proposed patch I believe that DerivedSources.make files are Xcode only at this point. EWS will tell for certain.
Comment on attachment 441777 [details] proposed patch non-Xcode builds are green, cq+
Committed r284507 (243253@main): <https://commits.webkit.org/243253@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 441777 [details].
<rdar://problem/84441156>