Abstract:Package managers are legion. Every programming language and operating system has its own solution, each with subtly different semantics for dependency resolution. This fragmentation prevents multilingual projects from expressing precise dependencies across language ecosystems; it leaves external system and hardware dependencies implicit and unversioned; it obscures security vulnerabilities that lie in the full dependency graph. We present the \textit{Package Calculus}, a formalism for dependency resolution that unifies the core semantics of diverse package managers. Through a series of formal reductions, we show how this core is expressive enough to model the diversity that real-world package managers employ in their dependency expression languages. By using the Package Calculus as the intermediate representation of dependencies, we enable translation between distinct package managers and resolution across ecosystems.
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第一件事，是2026年1月，中科第五纪获得宇树科技“核心生态合作伙伴”称号。在To B及工业场景，中科第五纪目前作为宇树机器人的“大脑”模型供应商。
Екатерина Графская (Редактор отдела «Наука и техника»)，这一点在同城约会中也有详细论述