What would happen if we evaluate platforms based on their video editors? Would you rather use KDE and Kdenlive or Gnome and Pitivi?
From Wikipedia, the free encyclopedia
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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Nix is a big rabbit hole. You can use it as a normal package manager, but there's a lot more.
You can also use nix-shell to temporarily install packages, it drops you into a shell with your package and that package is gone when you exit the shell. You can also declare a shell using a shell.nix file with environment variables and packages you want (including specific versions) and enter that shell by running nix-shell.
You can also declare your full user environment using nix home manager. Using a home.nix file you can list packages you need and configure everything. That also makes it easy to backup your user environment by just copying the home.nix file.