swift spm cache

Asked on 2025-06-11

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The Swift Package Manager (SwiftPM) has seen improvements that enhance build performance, particularly with the introduction of prebuilt Swift syntax dependencies. This change eliminates an expensive build step, significantly reducing clean build times, especially in continuous integration environments. If you own a package that provides macros, your clients can benefit from this optimization as long as the package depends on a tagged release of Swift syntax. These updates are part of the broader enhancements in Swift 6.2, which aim to improve productivity by optimizing build processes and providing better tools for developers.

For more details, you can refer to the session What’s new in Swift (04:40) where these improvements are discussed.