I've seen 'virtualenv' refer to both an environment with isolated packages, and the tool that creates that environment. Can be confusing.
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The niche of short, environment-specific scripts, and the consequences for programming language design choices: https://brrt-to-the-future.blogspot.com/2021/03/why-bother-with-scripting.html
It is *really* hard to find a good screenshot for a CLI tool when users are on a mobile browser.
This is the best I've come up with so far. I'm showing the terminal GUI to show where you'd use the tool.
I'm also trying several standalone screenshots to make it more comprehensible.
Deno has the cutest PL mascot I think I've ever seen. Are there any other contenders?