Gaps in Xcode build timeline

Reposting (after a while) from the Swift forums - the build timeline for our project has a lot of weird gaps in the beginning - almost 15 seconds in total, which is quite a big chunk of the total build time. Is there any way to determine why they exist or how I could fix them? I hope it's just something hidden and not the build system literally doing nothing...

This is on Xcode 15.4.

Hi @Aurelian! Did you manage to understand what that gaps meant? I'm analysing my project and I'm finding exactly same kind of gaps and have no clue how to fix them...

Gaps in Xcode build timeline
 
 
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