To get to your core point; I agree python without a virtual env, just raw python, is definintely not bulky. I'd argue its much more lightweight than cargo. My comment was because sounds like OP could be new-ish to programming, and, for a number of projects (ex; Android development), going from a big IDE to just a plaintext editor + command line commands can be a really painful jump. I remeber a Java course having a series of IDE tutorials and I could not for the life of me figure out the plaintext+commandline equivlent. The same can happen for certain python projects if a tutorial expects the editor to set the PYTHONPATH and the project has a venv, and the tutorial expects the editor's terminals start already-inside python virtual environment. That kind of stuff can make 'python without an IDE" confusing and daunting to someone merely following PyCharm tutorials.

I just wanted to assure OP they likely wouldn't have that kind of experince with Rust. AFAIK Rust tutorials rarely (if ever) assume an IDE.

Being not-bulky isn't a rust specific thing, a half-decent package manager meets the qualitification, but OP was asking about Rust and might not know.