Poetry vs Yarn
Poetry
python-poetry.org
Yarn
yarnpkg.comSide by side
| Figure | Poetry | Yarn |
|---|---|---|
| Price from | — | Free |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | — |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| Plans published | 0 | 1 |
| Spec score · Package Managers | 7.8 (#45) | 8.7 (#10) |
| Dependency resolution | Yes | Yes |
| Free plan | Yes | Yes |
| Lockfile support | Yes | Yes |
| Package formats | source distributions,wheels | npm packages; tarballs; local,Git,link,patch,portal,and workspace references |
| Private registry auth | Yes | Yes |
| Purpose | Poetry manages Python dependencies and packaging, installs and updates declared libraries, provides a lockfile for repeatable installs, and builds projects for distribution. | Yarn is a package manager that also describes itself as a project manager. |
| Supported platforms | Linux,macOS,Windows | Linux,macOS,Windows |
Plans
In their own words
Yarn
Yarn is a package manager and project manager for JavaScript projects, serving uses from simple projects to industry monorepos. It resolves dependencies, maintains lockfiles and provides workspaces that install and link packages within a project. Modern Yarn uses Plug'n'Play by default, generating a Node.js loader file instead of a typical node_modules folder; users can choose node_modules or pnpm-style symlink installs instead. Yarn caches installed packages and shares them among projects on the same machine. Its offline mirror and zero-installs workflow can keep cached packages in a repository and reduce reliance on the npm registry. Plugins can extend resolvers, fetchers, linkers, commands and lifecycle hooks. Generated editor SDKs and settings support VSCode, Vim, Emacs and Neovim. Yarn runs on Linux, macOS and Windows and is free, with no paid plans or usage limits stated. Its documentation notes that React Native and Expo require typical node_modules installs. Yarn does not run audits during installation by default; users can run yarn npm audit separately.