Cargo vs vcpkg

Cargo is the free package manager and build tool for Rust, used through a command-line interface. It downloads dependencies, builds packages, and supports repeatable builds with lockfiles. Developers can compile, check, document, test, run, package, install, and publish Rust projects. The `cargo new` command creates a package, defaulting to a binary; adding `--lib` creates a library. Cargo uses crates.io by default and also handles alternate registries, Git dependencies, and local paths. Workspaces allow multiple packages to share a lockfile and output directory. Package features can enable conditional compilation and optional dependencies. In offline mode, Cargo avoids network access and attempts to use cached data. It supports authentication options for registries and new subcommands without modifying Cargo itself. Rustup installs Cargo with the stable Rust release, and installation instructions cover Windows, macOS, Linux, and other Unix-like systems. Cargo is open source under the MIT and Apache License, Version 2.0. Some documented capabilities remain unstable and require a nightly toolchain and `-Z` flags.

vcpkg is a free package manager for acquiring and managing C/C++ libraries. Its curated registry contains over 2,300 open-source libraries, with dependency resolution across Windows, macOS, Linux, Android, and iOS. Projects can declare dependencies, optional features, and version constraints in manifest files; baseline version sets and individual package pins help keep dependency choices reproducible. vcpkg integrates with CMake and MSBuild, while manual integration is supported for other build systems. Built packages can be cached for reuse across developer machines and continuous integration runs. Asset caching can mirror source assets and build tools for offline or air-gapped environments. Users can also create custom registries for private libraries, patches, or other packages. Documented editor integrations include Visual Studio, Visual Studio Code, CLion, and Qt Creator. The project says most ports use libraries' original build systems and obtain source code and tools from their official distribution locations. vcpkg collects anonymous usage data, with opt-out options. Firewall access needs depend on the ports installed.