Fast reliable Swift builds with Buck

on YouTube ↗28m

" summary

Uber replaces Xcode build steps with Buck and a distributed cache, adding Swift support upstream so CI and developers share intermediate artifacts. Repository splits into >300 iOS modules; project generation removes checked-in Xcode files. Cache rollout cuts typical CI build time sharply and a compiler-stage change (emit module before object) reduces Swift compile combining time by ~35%, enabling parallelized testing. Remaining issues: unstable Swift module binaries across Swift releases and lack of ABI-based caching.

AI-written summary · about

" chapters (13)

1. 0:00Start
2. 0:48Mobile Developer Platform
3. 1:52Overview
4. 3:07Swift Example
5. 6:19Swift Compiler
6. 10:00Declarative Build Language
7. 12:52Buck File
8. 15:06Action Graph
9. 22:43Introduction the Swift Compiler
10. 24:27Recap
11. 24:51Project Structure
12. 25:56Challenges
13. 27:00Abi Based Caching

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