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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Author(s): Thomas Wilhelm, Orkun Furat, Jules M. Dake, Carl E. Krill III, Volker Schmidt。关于这个话题，爱思助手下载最新版本提供了深入分析
第四十三条 行政执法监督工作中涉及行政执法人员管理、教育培训、行为规范等方面的制度，由国务院行政执法监督机构会同国务院有关部门另行制定。
Arsenal and Liverpool will fancy their chance of making the quarter-finals, while Manchester City and Newcastle face tougher routes