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nixos docs: format =)

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Graham Christensen
2018-05-01 19:57:09 -04:00
parent 77161de454
commit eca5c99bf8
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nixos/doc/manual/configuration/declarative-packages.xml
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xmlns:xi="http://www.w3.org/2001/XInclude"
version="5.0"
xml:id="sec-declarative-package-mgmt">
<title>Declarative Package Management</title>
<title>Declarative Package Management</title>
<para>With declarative package management, you specify which packages
you want on your system by setting the option
<xref linkend="opt-environment.systemPackages"/>. For instance, adding the
following line to <filename>configuration.nix</filename> enables the
Mozilla Thunderbird email application:
<para>
With declarative package management, you specify which packages you want on
your system by setting the option
<xref linkend="opt-environment.systemPackages"/>. For instance, adding the
following line to <filename>configuration.nix</filename> enables the Mozilla
Thunderbird email application:
<programlisting>
<xref linkend="opt-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>
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:
<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>
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
<xref linkend="opt-environment.systemPackages"/> and run
<command>nixos-rebuild switch</command>.
</para>
<para>To “uninstall” a package, simply remove it from
<xref linkend="opt-environment.systemPackages"/> and run
<command>nixos-rebuild switch</command>.</para>
<xi:include href="customizing-packages.xml" />
<xi:include href="adding-custom-packages.xml" />
<xi:include href="customizing-packages.xml" />
<xi:include href="adding-custom-packages.xml" />
</section>