mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-19 04:02:10 +00:00
2cd7c1f198
This is primarily to ensure that -I nixpkgs=https://nixos.org/channels/nixos-unstable/nixexprs.tar.xz and -I nixpkgs=https://github.com/NixOS/nixpkgs-channels/archive/nixos-unstable.tar.gz and -I nixpkgs=https://nixos.org/channels/nixpkgs-unstable/nixexprs.tar.xz behave consistently. It also allows installing packages via "nix-env -iA nixos.<pkg>" rather than "nixos.pkgs.<pkg>". It would be even better to allow "nixpkgs.<pkg>", but that requires a change to nix-channel. Fixes #7659.
44 lines
1.5 KiB
XML
44 lines
1.5 KiB
XML
<section xmlns="http://docbook.org/ns/docbook"
|
|
xmlns:xlink="http://www.w3.org/1999/xlink"
|
|
xmlns:xi="http://www.w3.org/2001/XInclude"
|
|
version="5.0"
|
|
xml:id="sec-declarative-package-mgmt">
|
|
|
|
<title>Declarative Package Management</title>
|
|
|
|
<para>With declarative package management, you specify which packages
|
|
you want on your system by setting the option
|
|
<option>environment.systemPackages</option>. For instance, adding the
|
|
following line to <filename>configuration.nix</filename> enables the
|
|
Mozilla Thunderbird email application:
|
|
|
|
<programlisting>
|
|
environment.systemPackages = [ pkgs.thunderbird ];
|
|
</programlisting>
|
|
|
|
The effect of this specification is that the Thunderbird package from
|
|
Nixpkgs will be built or downloaded as part of the system when you run
|
|
<command>nixos-rebuild switch</command>.</para>
|
|
|
|
<para>You can get a list of the available packages as follows:
|
|
<screen>
|
|
$ nix-env -qaP '*' --description
|
|
nixos.firefox firefox-23.0 Mozilla Firefox - the browser, reloaded
|
|
<replaceable>...</replaceable>
|
|
</screen>
|
|
|
|
The first column in the output is the <emphasis>attribute
|
|
name</emphasis>, such as
|
|
<literal>nixos.thunderbird</literal>. (The
|
|
<literal>nixos</literal> prefix allows distinguishing between
|
|
different channels that you might have.)</para>
|
|
|
|
<para>To “uninstall” a package, simply remove it from
|
|
<option>environment.systemPackages</option> and run
|
|
<command>nixos-rebuild switch</command>.</para>
|
|
|
|
<xi:include href="customizing-packages.xml" />
|
|
<xi:include href="adding-custom-packages.xml" />
|
|
|
|
</section>
|