Xcode 26.4 quietly removed the ability to run app-hosted unit tests against physical iOS 16 devices, and Xcode 27 finally added a Delete Derived Data menu item — which the community correctly read as Apple admitting the IDE corrupts its own caches on a regular basis. Between those two announcements is the entire reality of…
Saving Quartz Composition for distribution
Today I learned a very important lesson when saving Quartz Composer composition files for use in other machines: always save the composition as a flat file. Even though according to Wikipedia that quartz composer version 4.0 saves virtual patches in the composition as a fallback, the composition may not run properly if it isn’t saved…