Set of default packages that aren’t strictly necessary for a running system, entries can be removed for a more minimal NixOS installation. Like with systemPackages, packages are installed to /run/current-system/sw. They are automatically available to all users, and are automatically updated every time you rebuild the system configuration.

<rendered-html><p>these packages, with their <code>meta.priority</code> numerically
increased (thus lowering their installation priority):</p>
<pre><code>[ pkgs.perl pkgs.rsync pkgs.strace ]</code></pre>
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