this post was submitted on 18 Feb 2024
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Linux
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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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You're not exactly comparing apples to apples here.
Flatpak and appimages tend to be used in any distro because they can just be downloaded in a one off manner and installed then you're running the application (for the most part). They offer a manager of sorts but you don't need it to use the packages.
For nixpkgs, whike I'm sure I can get a package from the sounds of the sizes the package covers only the application or the library, meaning I still need the dependencies.
So what exactly would make me the user trade my built in tools (apt/pacman/dnf) for nix? Keep in mind no matter how great you feel it is, you need to provide reasoning that motivates me to install and learn this new tool instead of the old ones I have.
When you download/build a nix package, nix will absolutely also download all necessary dependencies.
Getting a shell with a specific package as a one off. Want ffmpeg?
nix-shell -p ffmpegopens a shell with ffmpeg in its path, and only that shell has it.Along with that, that means users can install packages for themselves. Limited use for single-user systems, but nonetheless it's possible.
Per-project dependencies. Pretty much the same as above, but the dependencies are declared in a file which is part of the project. In many cases that same file can also be used as a nix package itself, like any other in nixpkgs. Very useful if you write software yourself. Here's an example.
Being a source-based package manager with a cache means that you get all the benefits of prebuilt packages but can easily patch or use other versions of a package, with no difference in use (other than that it will build it locally instead of downloading from the cache).
On a distro with a different main package manager I would probably mainly use it for per-project dependencies though.
So it sounds like nixpkgs is more akin to virtualenvs in Python rather than a traditional package manager. Is that an accurate statement?
If so, I'd recommend that be your selling point because that's some powerful security.
Virtualenvs for everything that don't duplicate resources and are reproducible.