Poetry?

And pipenv, or just literally manually creating a venv. Uv didn't invent that, it's winning on speed mainly, and then capitalising on starting with a base that includes multiple general improvements in the Python ecosystem.

uv also installs the python version your project needs which is a huge pain in the ass if you use some old Linux distro with outdated python.

Like pyenv pioneered for python and nvm for node ? ;)

Years ago

Sure, but it's not a matter of capability but of low friction and sane defaults.

These things matter though a lot of developers don't seem to understand that.

In a uv project I can just git clone, cd, uv sync and I am ready to go. Nothing in the python ecosystem offered that before.