rv Is a New Rust-Powered Ruby Version Manager Inspired by Py...

The hype around uv is real and it's spilling over into other ecosystems. The Python world has been buzzing about uv for the past year, and for good reason. What started as a faster pip alternative has evolved into something much more ambitious: a unified tool that manages Python versions, dependencies, and even runs isolated scripts with their own environments. Now, that innovation is spreading to Ruby with rv, a new project from Spinel.coop, a collective of Ruby open source maintainers that includes André Arko (Bundler maintainer), Samuel Giddins (RubyGems team), and Sam Stephenson (original creator of rbenv). The uv Effect# For developers who haven’t been following Python tooling news, uv has been transformative. Written in Rust for blazing speed, it collapsed multiple tools (pip, poetry, pyenv, virtualenv) into a single coherent experience. The killer feature? Being able to run uvx some-tool and have it automatically download the right Python version, create an isolated environment, install dependencies, and run, all in the time it used to take just to activate a virtual environment. The impact has been dramatic. Developers report 10-100x speedups in their workflows, and uv is eliminating entire categories of problems around version conflicts and environment management. Its rapid adoption in the Python ecosystem has other language communities taking notice.