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<h1>vdb Repository Format</h1>
<p>The <code>vdb</code> repository format is used on Gentoo and derived distributions to track packages installed from
an ebuild. It is not used on Exherbo; <a href="exndbam.html">exndbam</a> serves the equivalent purpose there.</p>
<p>As well as the <a href="index.html">general keys supported for all repositories</a>, the following keys have meaning
for <code>vdb</code> format repositories:</p>
<dl>
<dt><code>location</code></dt>
<dd>The location of the repository. Mandatory. On Gentoo systems, this must be <code>${root}/var/db/pkg</code> to
avoid problems with broken ebuilds that illegally access the VDB.</dd>
<dt><code>names_cache</code></dt>
<dd>The directory in which to look for a names cache, and in which to generate a names cache. A names cache will
significantly speed up converting a <code>pkg</code> into a <code>cat/pkg</code>. See <a
href="../../overview/gettingstarted.html">Getting Started</a> for notes. Optional, set to <code>/var/empty</code>
to disable.</dd>
<dt><code>builddir</code></dt>
<dd>The directory to use when 'building' a package for an uninstall (a temporary directory is needed for various
operations). Optional.</dd>
</dl>
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