From challenge to joy: My journey developing Tuist for scalable Xcode Projects

This is the slides of the talk that I gave at Swiftable 2023 about our experience building and evolving Tuist to help teams overcome the challenges of using Xcode at scale.

1. Pedro Piñera · @pepicrft / @tuistio From challenge to joy My journey developing Tuist for scalable Xcode Projects
2. Pedro Piñera · @pepicrft / @tuistio Hola 👋 • Pedro Piñera • Based in Berlin 🍺 • Never tried mate 🧉 • Creator of Tuist and XcodeProj
3. It all started with Git conflicts… Pedro Piñera · @pepicrft / @tuistio
4. <<<<<<< HEAD 6C6137152AEE54830017CA42 /* Asado.swift in Sources */ = {isa = PBXBuildFile; fi leRef = 6C6137142AEE54830017CA42 /* Asado.swift */; }; ======= 6CB8F03C2AEE54CA00C3829E /* Mate.swift in Sources */ = {isa = PBXBuildFile; fi leRef = 6CB8F03B2AEE54CA00C3829E /* Mate.swift */; }; >>>>>>> ead2c0b (Add mate) VCS Conflicts Pedro Piñera · @pepicrft / @tuistio
5. .pbxproj was introduced before Git .pbxproj 2003 Git 2005 GitHub 2008 Pedro Piñera · @pepicrft / @tuistio
6. Apple tried to improve the situation with workspaces .pbxproj 2003 Git 2005 GitHub 2008 Workspaces 2011 Pedro Piñera · @pepicrft / @tuistio
7. Models Representation Tools Xcode xcodebuild Xcode build system .xcodeproj .xcworkspace .pbxproj Project Workspace Target Pedro Piñera · @pepicrft / @tuistio
8. Prone to Git conflicts Free of Git conflicts
9. Pedro Piñera · @pepicrft / @tuistio
10. Sources/**/*.swift Globbing Pedro Piñera · @pepicrft / @tuistio
11. Pedro Piñera · @pepicrft / @tuistio Project generation Tuist
12. Pedro Piñera · @pepicrft / @tuistio
13. ✅ My project has minimal Git conflicts - Project.swift DSL ⚠ Modifying the project graph is painful Pedro Piñera · @pepicrft / @tuistio
14. Framework not found But in can see it in the project 🤨
15. Pedro Piñera · @pepicrft / @tuistio
16. Pedro Piñera · @pepicrft / @tuistio
17. iOS App Static Library Dynamic Framework Bundle macOS App Static Library Dynamic Framework Static Library Static Library Pedro Piñera · @pepicrft / @tuistio
18. iOS App Static Library Dynamic Framework Bundle macOS App Static Library Dynamic Framework Static Library Static Library Copy into product Copy into product
19. iOS App Static Library Dynamic Framework Bundle macOS App Static Library Dynamic Framework Static Library Static Library Static Library Pedro Piñera · @pepicrft / @tuistio
20. ✅ My project has minimal Git conflicts - Project.swift DSL ✅ My project graph is fun to work with - Project.swift DSL ⚠ Xcode is slow due to the size of the project Pedro Piñera · @pepicrft / @tuistio
21. iOS App Static Library Dynamic Framework Bundle macOS App Static Library Dynamic Framework Static Library Static Library
22. ✅ My project has minimal Git conflicts - Project.swift DSL ✅ My project graph is fun to work with - Project.swift DSL ✅ My project is fast within Xcode - Focused projects integration ⚠ My project dependencies DX is not ideal Pedro Piñera · @pepicrft / @tuistio
23. Pedro Piñera · @pepicrft / @tuistio
24. rm -rf ~/Library/Developer/Xcode/DerivedData Pedro Piñera · @pepicrft / @tuistio
26. Pedro Piñera · @pepicrft / @tuistio Resolved by SPM Integrated using Xcode Projects
27. Bugs, Bugs, Bugs, Bugs, Bugs, Bugs, Bugs, Bugs, Bugs, Bugs, Bugs, Bugs, Bugs, Bugs, Bugs, Bugs, Bugs, Bugs, Bugs, Bugs, Bugs, Bugs, Bugs, Bugs, Bugs, Bugs, Bugs, Bugs But Apple will hopefully fix it Pedro Piñera · @pepicrft / @tuistio
28. ✅ My project has minimal Git conflicts - Project.swift DSL ✅ My project graph is fun to work with - Project.swift DSL ✅ My project is fast within Xcode - Focused projects ✅ My project deps DX is smooth - XcodeProj package integration ⚠ My project clean builds are slow Pedro Piñera · @pepicrft / @tuistio
29. iOS App Static Library Dynamic Framework Bundle macOS App Static Library Static Library
30. iOS App Static Library Dynamic Framework Bundle macOS App Static Library Static Library
32. We cache Swift Macros and Vapor too Pedro Piñera · @pepicrft / @tuistio
33. ✅ My project has minimal Git conflicts - Project.swift DSL ✅ My project graph is fun to work with - Project.swift DSL ✅ My project is fast within Xcode - Focused projects ✅ My project deps DX is smooth - XcodeProj package integration ✅ My project clean builds are fast - Binary caching ⚠ My project CI times are slow Pedro Piñera · @pepicrft / @tuistio
34. iOS App Static Library Dynamic Framework Bundle macOS App Static Library Dynamic Framework Static Library Static Library
36. ✅ My project has minimal Git conflicts - Project.swift DSL ✅ My project graph is fun to work with - Project.swift DSL ✅ My project is fast within Xcode - Focused projects ✅ My project deps DX is smooth - XcodeProj package integration ✅ My project clean builds are fast - Binary caching ✅ My project CI times are fast - Selective testing and binary caching Pedro Piñera · @pepicrft / @tuistio
37. Resource synthesizers Generators Tasks Plugins Graph inspection Run command Actionable insights Distributed caching … Pedro Piñera · @pepicrft / @tuistio
38. Simple things should be easy, and everything else should be possible Pedro Piñera · @pepicrft / @tuistio
39. Everything else is possible, but complex Pedro Piñera · @pepicrft / @tuistio
40. Working at scale can be simple Pedro Piñera · @pepicrft / @tuistio
41. Working at scale can be simple and most importantly fun Pedro Piñera · @pepicrft / @tuistio
42. Gracias