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<div class="titlepage">
<div><div><h1 class="title">
<a name="specification"></a>PackageKit Specification</h1></div></div>
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<div class="partintro">
<div></div>
<p>
PackageKit is a D-Bus abstraction layer that allows the session user
to manage packages in a secure way using a cross-distro, cross-architecture API.
PackageKit is built using a lightweight backend architecture.
PackageKit is product and vendor neutral and is currently being developed by a small team
of developers.
</p>
<p>
This part documents core features of PackageKit.
</p>
<div class="toc">
<p><b>Table of Contents</b></p>
<dl class="toc">
<dt><span class="glossary"><a href="specification.html#annotation-glossary">Annotation Glossary</a></span></dt>
<dt><span class="chapter"><a href="introduction.html">PackageKit Introduction</a></span></dt>
<dd><dl>
<dt><span class="sect1"><a href="introduction.html#introduction-description">Overall Description</a></span></dt>
<dt><span class="sect1"><a href="introduction-backends.html">Backends</a></span></dt>
</dl></dd>
<dt><span class="chapter"><a href="concepts.html">Important Concepts</a></span></dt>
<dd><dl>
<dt><span class="sect1"><a href="concepts.html#introduction-ideas-packageid">Package ID</a></span></dt>
<dt><span class="sect1"><a href="introduction-ideas-filters.html">Filters</a></span></dt>
<dd><dl>
<dt><span class="sect2"><a href="introduction-ideas-filters.html#introduction-ideas-filters-removeinstalled">Removing installed versions in search results</a></span></dt>
<dt><span class="sect2"><a href="introduction-ideas-filters.html#introduction-ideas-filters-examples">Filter examples</a></span></dt>
</dl></dd>
<dt><span class="sect1"><a href="introduction-errors.html">Error Enums</a></span></dt>
<dt><span class="sect1"><a href="introduction-group-type.html">Group type</a></span></dt>
<dt><span class="sect1"><a href="introduction-cancellation.html">Cancellation</a></span></dt>
<dt><span class="sect1"><a href="introduction-ideas-transactions.html">Transactions</a></span></dt>
<dd><dl>
<dt><span class="sect2"><a href="introduction-ideas-transactions.html#introduction-ideas-transactions-success">Transaction example: Success</a></span></dt>
<dt><span class="sect2"><a href="introduction-ideas-transactions.html#introduction-ideas-transactions-failure">Transaction example: Failure</a></span></dt>
<dt><span class="sect2"><a href="introduction-ideas-transactions.html#introduction-ideas-transactions-trusted">Transaction example: Trusted</a></span></dt>
<dt><span class="sect2"><a href="introduction-ideas-transactions.html#introduction-ideas-transactions-auto-untrusted">Transaction example: Auto Untrusted</a></span></dt>
<dt><span class="sect2"><a href="introduction-ideas-transactions.html#introduction-ideas-transactions-sig-install">Transaction example: Package signature install</a></span></dt>
<dt><span class="sect2"><a href="introduction-ideas-transactions.html#introduction-ideas-transactions-download">Transaction example: Download</a></span></dt>
<dt><span class="sect2"><a href="introduction-ideas-transactions.html#introduction-ideas-transactions-set-locale">Transaction example: Setting the locale</a></span></dt>
<dt><span class="sect2"><a href="introduction-ideas-transactions.html#introduction-ideas-transactions-repair">Transaction example: Repair</a></span></dt>
</dl></dd>
<dt><span class="sect1"><a href="introduction-ideas-transactionid.html">Transaction IDs</a></span></dt>
<dt><span class="sect1"><a href="introduction-ideas-status.html">Status Values</a></span></dt>
</dl></dd>
<dt><span class="chapter"><a href="backend-compiled.html">Compiled Backends</a></span></dt>
<dt><span class="chapter"><a href="backend-spawn.html">Spawned Backends</a></span></dt>
<dd><dl><dt><span class="sect1"><a href="backend-spawn.html#backends-spawn-intro">Introduction</a></span></dt></dl></dd>
</dl>
</div>
</div>
<div class="glossary">
<div class="titlepage"><div><div><h2 class="title">
<a name="annotation-glossary"></a>Annotation Glossary</h2></div></div></div>
<a name="glsA"></a><h3 class="title">A</h3>
<dt><span class="glossterm"><a name="annotation-glossterm-array"></a>array</span></dt>
<dd class="glossdef"><p>Parameter points to an array of items.</p></dd>
<a name="glsE"></a><h3 class="title">E</h3>
<dt><span class="glossterm"><a name="annotation-glossterm-element-type"></a>element-type</span></dt>
<dd class="glossdef"><p>Generics and defining elements of containers and arrays.</p></dd>
<a name="glsO"></a><h3 class="title">O</h3>
<dt><span class="glossterm"><a name="annotation-glossterm-out"></a>out</span></dt>
<dd class="glossdef"><p>Parameter for returning results. Default is <acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>.</p></dd>
<a name="glsS"></a><h3 class="title">S</h3>
<dt><span class="glossterm"><a name="annotation-glossterm-scope%20call"></a>scope call</span></dt>
<dd class="glossdef"><p>The callback is valid only during the call to the method.</p></dd>
<dt><span class="glossterm"><a name="annotation-glossterm-scope%20notified"></a>scope notified</span></dt>
<dd class="glossdef"><p>The callback is valid until the GDestroyNotify argument is called.</p></dd>
<dt><span class="glossterm"><a name="annotation-glossterm-skip"></a>skip</span></dt>
<dd class="glossdef"><p>Exposed in C code, not necessarily available in other languages.</p></dd>
<a name="glsT"></a><h3 class="title">T</h3>
<dt><span class="glossterm"><a name="annotation-glossterm-transfer%20container"></a>transfer container</span></dt>
<dd class="glossdef"><p>Free data container after the code is done.</p></dd>
<dt><span class="glossterm"><a name="annotation-glossterm-transfer%20full"></a>transfer full</span></dt>
<dd class="glossdef"><p>Free data after the code is done.</p></dd>
<dt><span class="glossterm"><a name="annotation-glossterm-transfer%20none"></a>transfer none</span></dt>
<dd class="glossdef"><p>Don't free data after the code is done.</p></dd>
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