There is no workflow killer quite like the infinite "Indexing..." progress bar in Xcode. You open your project, ready to implement a feature, but the editor features—syntax highlighting, autocomplete, and "Jump to Definition"—are dead. Your fans are spinning at max RPM, SourceKitService is consuming 100% CPU, and Xcode has effectively become a glorified text editor. For iOS developers, this isn't just an annoyance; it is a significant drain on productivity. While the immediate impulse is to restart Xcode, that rarely solves the underlying issue. The problem usually lies deeper in the interaction between the Swift compiler, the build system, and the derived data cache. Here is a technical deep dive into why Xcode hangs on indexing and five distinct strategies to resolve it permanently. The Root Cause: Why Indexing Hangs To fix the problem, we must understand the architecture of the Xcode build system. The "Indexing" phase is powered primarily by Sour...
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