this post was submitted on 24 Jan 2024
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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I do think it's important to emphasize the difference between installing software in user environments and system wide, which is why the tool is named nix-env. System packages must be installed via the nixos configuration file and a rebuild.
To me the biggest missing piece for new users is a tool to help manage your system configuration and reduce the frustration of having to constantly look up nix syntax or nixpkgs quirks. Maybe thinking of it as a nixos/nix IDE? Also a polished distribution built on nixos would be a good starting point (and easy to do, I didn't realize I could just copy someone else's configuration until well after I had my system working well enough)
The other thing that got me starting out is the need to garbage collect old packages. It's not strictly necessary if you have a large enough disk, but it took me several iterations of filling my root partition before I figured out how to properly clean up old generations.
Have a good guide on cleanup? 👀
I think ultimately
Sudo nix-collect-garbage --delete-old
Is my go-to command. For a while I was looking at generations manually, but now I just wait a while (days, a few reboots, or until I need more space) to run this after changing things in case the new stuff is broken.
I think running this as my normal user cleans out old env generations... But I'm not 100% sure.