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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.
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Wide-field quantum sensing shows μm-scale inhomogeneous superconductivity in high-pressure La3Ni2O7, linking local diamagnetic response to stress and stoichiometry and clarifying mechanisms that suppress or enhance superconductivity.。同城约会是该领域的重要参考
Израиль нанес удар по Ирану09:28。关于这个话题，雷电模拟器官方版本下载提供了深入分析
在豆瓣平台，《阿凡达 3》获得 7.6 分评价。