[jen20]

> What’s difficult about this?

Well, for starters, that particular multi-liner:

- installs an entire package manager, which may or may not conflict with system tools or a different package manager,

- assumes pyenv will build Python against the system libraries without additional flags (it won't if you're running Big Sur, you'll need zlib from Homebrew),

- assumes you are on macOS, and does not attempt to work on Windows or Linux, or account for the idea that someone might not want to deploy a program using Docker.

[lima]

Plus, it does so non-reproducibly and downloads random binaries from the internet.

[lanstin]

Which makes rolling back a bad push really interesting. Give me a append only repo with my static binaries that my compute nodes deploy from. I even went to the trouble to put Python into RPMs for this.