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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Sainsbury’s is cutting 300 head office jobs as it restructures its technology team and Argos delivery network, creating more separation between the two businesses.
第四条 治安管理处罚的程序，适用本法的规定；本法没有规定的，适用《中华人民共和国行政处罚法》、《中华人民共和国行政强制法》的有关规定。。夫子对此有专业解读