You should check out mise (https://github.com/jdx/mise), it is very similar to ASDF (multi langs) but written in Rust instead of Bash, and doesnt use the shim technique that ASDF does. My shell startup went from a couple hundred ms to a couple dozen ms.

Yeah, ASDF is fantastic, I'm glad stuff like pyenv and rvm existed and paved the way for it but ASDF is the way to go nowadays.

asdf for python is a wrapper around pyenv, it didn't "pave the way", it's an important part of asdf.

(Also I like mise better currently: https://github.com/jdx/mise)

Curious what you like about mise! I've been a strong advocate for asdf for a few years now. Aside from smooshing together tools that are often used together, but not always (direnv, make), I can't see what mise adds to the picture. And I like still having direnv for what direnv does and make for make does, rather than an all-in-one.

the asdf CLI has really sharp edges and feels kind of aggressively unhelpful.

Even if you just use mise as an asdf alternative, it has a nicer CLI and interacts with the same plugin ecosystem more smoothly.

(I've found it to be an improvement on direnv, but I still use make)

the comparison to asdf page has more: https://mise.jdx.dev/dev-tools/comparison-to-asdf.html

Damn. I'm convinced. The asdf CLI was always a bit of a pain ... mostly I don't interact with it that often. But mise seems light years better designed. Thanks!

Well that's excellent!

I used to be all-in for pyenv and rbenv both but have loved using asdf so much more.