山东省委召开全省干事创业担当尽责确保“十五五”开好局工作会议，动员全省上下进一步干事创业、担当尽责。山东将通过实地调研、政务服务便民热线等方式，广泛征求意见建议，省、市、县（市、区）分别研究确定集中推进的重点民生实事，从一开始就让群众参与、受益、可感可及。
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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.