Uh, just yesterday. Installed NixOS (with KDE) because I learned Debian at work, but am really missing the ability to track what I've installed via configuration. I like the idea of dotfiles in a repo, but want a bit more control like that for my OS.

Context: I'm a data engineer that writes Python. Python has pyproject.toml files (toml ~= ini files) where you can specify which libraries you want to use, defining which version you minimally, maximally, or just specifically want. And I wished that setup existed for Debian as well, but it doesn't. So after searching I found that NixOS is pretty much the closest thing. Windows 10 is EOL soon enough, so might as well switch beforehand and not wait until the last second.