It looks cool but I feel this kind of tool is only useful if Ruby is the only language you use. I have to manage several runtimes for most projects. I've used asdf for years and recently switched to mise: these tools already download pre compiled binaries for Ruby, plus pretty much any other language runtime.
It's likely that you get better per language features for something specific to the language though. We end up in exactly the same kind of frustration, that for some random project you need this specific tool that does dependency management of the specific runtime. asdf and mise both respect a .tool-versions file, I'd rather see things go more in that direction with some kind of standard.
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