This makes the evaluation cache incremental. Each evaluated attribute is cached individually along with the files and environment variables it touched. When you change one thing, only the attributes that depend on that change are re-evaluated; everything else is served from cache. A single evaluation now covers devenv shell, devenv test, devenv build, and every other command. When nothing changed (verified by content hash), the cached result is returned immediately without invoking Nix at all.
年度征文｜LLM 眼中的好文章：少数派 2025 热门内容解码
。搜狗输入法是该领域的重要参考
— Google Gemini (@GeminiApp) February 25, 2026
most people do not to install Android themselves,