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<section xmlns="http://docbook.org/ns/docbook"
xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:xi="http://www.w3.org/2001/XInclude"
xml:id="sec-pkgs-snapTools">
<title>pkgs.snapTools</title>
<para>
<varname>pkgs.snapTools</varname> is a set of functions for creating
Snapcraft images. Snap and Snapcraft is not used to perform these operations.
</para>
<section xml:id="ssec-pkgs-snapTools-makeSnap-signature">
<title>The makeSnap Function</title>
<para>
<function>makeSnap</function> takes a single named argument,
<parameter>meta</parameter>. This argument mirrors
<link xlink:href="https://docs.snapcraft.io/snap-format">the upstream
<filename>snap.yaml</filename> format</link> exactly.
</para>
<para>
The <parameter>base</parameter> should not be be specified, as
<function>makeSnap</function> will force set it.
</para>
<para>
Currently, <function>makeSnap</function> does not support creating GUI
stubs.
</para>
</section>
<section xml:id="ssec-pkgs-snapTools-build-a-snap-hello">
<title>Build a Hello World Snap</title>
<example xml:id="ex-snapTools-buildSnap-hello">
<title>Making a Hello World Snap</title>
<para>
The following expression packages GNU Hello as a Snapcraft snap.
</para>
<programlisting><xi:include href="../../pkgs/build-support/snap/example-hello.nix" parse="text" /></programlisting>
<para>
<command>nix-build</command> this expression and install it with
<command>snap install ./result --dangerous</command>.
<command>hello</command> will now be the Snapcraft version of the package.
</para>
</example>
</section>
<section xml:id="ssec-pkgs-snapTools-build-a-snap-firefox">
<title>Build a Hello World Snap</title>
<example xml:id="ex-snapTools-buildSnap-firefox">
<title>Making a Graphical Snap</title>
<para>
Graphical programs require many more integrations with the host. This
example uses Firefox as an example, because it is one of the most
complicated programs we could package.
</para>
<programlisting><xi:include href="../../pkgs/build-support/snap/example-firefox.nix" parse="text" /></programlisting>
<para>
<command>nix-build</command> this expression and install it with
<command>snap install ./result --dangerous</command>.
<command>nix-example-firefox</command> will now be the Snapcraft version of
the Firefox package.
</para>
<para>
The specific meaning behind plugs can be looked up in the
<link xlink:href="https://docs.snapcraft.io/supported-interfaces">Snapcraft
interface documentation</link>.
</para>
</example>
</section>
</section>
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