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Package Management
This section describes how to add additional packages to your system. NixOS has two distinct styles of package management:
-
Declarative, where you declare what packages you want in your
configuration.nix
. Every time you runnixos-rebuild
, NixOS will ensure that you get a consistent set of binaries corresponding to your specification. -
Ad hoc, where you install, upgrade and uninstall packages via the
nix-env
command. This style allows mixing packages from different Nixpkgs versions. It's the only choice for non-root users.
<xi:include href="declarative-packages.section.xml" />
<xi:include href="ad-hoc-packages.section.xml" />