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.
Netflix is eating Hollywood — because it has to
。关于这个话题，搜狗输入法2026提供了深入分析
My Voyager keyboard and Ploopy Adept trackball are mounted to a telescoping section of T-slot that allows me to stand about 1.5 meters / 5 feet away from the monitors. This reduces eyestrain from working at a computer all day and, hopefully, helps slow the progression of myopia. I used ZSA’s Tripod Mount kit and standard ball-head tripod mounts to connect the keyboard and mouse to the T-slot. This makes for easy, secure tenting of the keyboard and mouse at the perfect angle.
You’ve likely seen many blog posts about AI agent coding/vibecoding where the author talks about all the wonderful things agents can now do supported by vague anecdata, how agents will lead to the atrophy of programming skills, how agents impugn the sovereignty of the human soul, etc etc. This is NOT one of those posts. You’ve been warned.