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<span id="Hooks"></span><div class="header">
<p>
Next: <a href="Packaging-System.html" accesskey="n" rel="next">Packaging System</a>, Previous: <a href="Environment-Variables.html" accesskey="p" rel="prev">Environment Variables</a>, Up: <a href="Package-Manager.html" accesskey="u" rel="up">Package Manager</a> </p>
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<span id="Hooks-1"></span><h3 class="section">2.3 Hooks</h3>
<p>Hooks can be used in order to change the runtime behaviour of the package manager.
There are a variety of package hooks, mostly self explanatory:
</p>
<ul>
<li> pre-build
</li><li> post-build
</li><li> build-fail
</li><li> pre-test
</li><li> test-fail
</li><li> pre-install
</li><li> post-install
</li><li> pre-remove
</li><li> post-remove
</li><li> pre-fetch
</li><li> post-fetch
</li><li> post-package
</li></ul>
<p>In order to use hooks, you will need to set the <code>CPT_HOOK</code> variable pointing
to your hook file. Your hook file <strong>MUST</strong> be a POSIX shell script as its
contents are sourced by the package manager.
</p>
<p>The hook is given 3 variables when it is executed. Those are:
</p><dl compact="compact">
<dt><code>$TYPE</code></dt>
<dd><p>The type of the hook, (pre-build, post-build, etc.)
</p></dd>
<dt><code>$PKG</code></dt>
<dd><p>The package that <code>cpt</code> is currently working on. Can be null.
</p></dd>
<dt><code>$DEST</code></dt>
<dd><p>The destination of the operation. Can be null.
</p></dd>
</dl>
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