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nixos/manual: clarify declarative packages section

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Aaron Janse 2019-03-13 18:40:00 -07:00
parent 44298e76d5
commit f67eb111ac
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13
nixos/doc/manual/configuration/declarative-packages.xml
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@ -14,9 +14,10 @@
<programlisting> <programlisting>
<xref linkend="opt-environment.systemPackages"/> = [ pkgs.thunderbird ]; <xref linkend="opt-environment.systemPackages"/> = [ pkgs.thunderbird ];
</programlisting> </programlisting>
The effect of this specification is that the Thunderbird package from Nixpkgs The <literal>pkgs</literal> variable is used to reference packages in your
will be built or downloaded as part of the system when you run root channel. The effect of this specification is that the Thunderbird
<command>nixos-rebuild switch</command>. package from your root Nixpkgs channel will be built or downloaded as part of
the system when you run <command>nixos-rebuild switch</command>.
</para> </para>
<para> <para>
@ -27,8 +28,10 @@ nixos.firefox firefox-23.0 Mozilla Firefox - the browser, reloaded
<replaceable>...</replaceable> <replaceable>...</replaceable>
</screen> </screen>
The first column in the output is the <emphasis>attribute name</emphasis>, The first column in the output is the <emphasis>attribute name</emphasis>,
such as <literal>nixos.thunderbird</literal>. (The <literal>nixos</literal> such as <literal>nixos.thunderbird</literal>. The <literal>nixos</literal>
prefix allows distinguishing between different channels that you might have.) prefix tells us that we want to get the package from the `nixos` channel.
Some systems have other channels installed, such as `nixpkgs` or custom
channels for development purposes.
</para> </para>
<para> <para>