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.
会议听取了全国人大常委会代表资格审查委员会主任委员杨晓超作的关于个别代表的代表资格的报告。
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圖像加註文字，餐廳允許寵物犬停留在戶外餐桌目前於香港屬「灰色地帶」。兩難選擇？。业内人士推荐同城约会作为进阶阅读
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