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<div class="slide titlepage">

  <h1 class="title">Debian Pure Blends - hacking in your parents' house</h1>

  <p class="author">

Jonas Smedegaard

</p>

  <p class="date">Nitte, Mangalore, October 28th, 2011</p>

</div>

<div class="section slide level1" id="overview">

<h1>Overview</h1>

<ul>

<li>Tricky terms</li>

<li>FLOSS Eco System</li>

<li>Debian - distro &amp; community</li>

<li>Customizing Debian</li>

</ul>

</div>

<div class="section slide level1" id="me-and-asia">

<div class="figure">

<img src="../map.png" alt="Asia trip" /><p class="caption">Asia trip</p>

</div>

<div class="section slide level1" id="tricky-terms">

<h1>Tricky terms</h1>

<p>FLOSS: <strong>F</strong>ree/<strong>L</strong>ibre <strong>O</strong>pen <strong>S</strong>ource <strong>S</strong>oftware.</p>

<p>Hacking: Being creative with small pieces -- like playing with Lego.</p>

<p>Cracking: Breaking digital &quot;locks&quot;, typically to steal digital data.</p>

</div>

<div class="section slide level1" id="floss-eco-system">

<h1>FLOSS Eco System</h1>

<div class="figure">

<img src="../developmentstream.png" alt="Software Code Stream" /><p class="caption">Software Code Stream</p>

</div>

<div class="section slide level1" id="debian---distro-community">

<h1>Debian - distro &amp; community</h1>

<ul>

<li>Community</li>

<li>Distribution</li>

</ul>

</div>

<div class="section slide level1" id="debian---community">

<h1>Debian - Community</h1>

<ul>

<li>~1000 &quot;Developers&quot;</li>

<li>~500 &quot;Maintainers&quot;</li>

<li>??? actual contributors...</li>

</ul>

</div>

<div class="section slide level1" id="debian---community-structure">

<h1>Debian - Community structure</h1>

<ul>

<li>Democracy</li>

</ul>

</div>

<div class="section slide level1" id="debian---community-structure-1">

<h1>Debian - Community structure</h1>

<ul>

<li><del>Democracy</del></li>

<li>We all obey Debian Free Software Guidelines</li>

<li>Almost no hierarchy: Each package maintainer responsible</li>

</ul>

</div>

<div class="section slide level1" id="debian---distribution">

<h1>Debian - Distribution</h1>

<ul>

<li>Generic - choices are exposed to the user</li>

<li>Mother of other distros</li>

</ul>

</div>

<div class="section slide level1" id="debian-packages">

<h1>Debian packages</h1>

<ul>

<li>They all obey Debian Policy</li>

<li>Mozilla Iceweasel (Firefox): ~3 packages (+ ~70 lang packages)</li>

<li>LibreOffice: ~30 packages (+ ~90 lang packages)</li>

<li>Debian: ~35.000 packages</li>

</ul>

</div>

<div class="section slide level1" id="debian-packaging---mentors-sponsoring">

<h1>Debian packaging - Mentors + sponsoring</h1>

<ul>

<li>Peer review - many eyes see more bugs</li>

<li>Education - Debian quality standards</li>

<li>Ideals transfer - get help on packaging</li>

<li>Mailinglist: <script type="text/javascript">

<!--

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<li>IRC channel on OFTC.net: #debian-mentors</li>

<li>Website: <a href="http://mentors.debian.net/"><code class="url">http://mentors.debian.net/</code></a></li>

</ul>

</div>

<div class="section slide level1" id="debian-packaging---join-teams">

<h1>Debian packaging - Join teams</h1>

<ul>

<li>Peer review - many eyes see more bugs</li>

<li>Education - Debian quality standards</li>

<li>Ideals transfer - get help on packaging</li>

<li>Wiki page: <a href="http://wiki.debian.org/Teams"><code class="url">http://wiki.debian.org/Teams</code></a></li>

</ul>

</div>

<div class="section slide level1" id="debian---derivatives">

<h1>Debian - derivatives</h1>

<ul>

<li>Knoppix</li>

<li>Ubuntu</li>

<li>SWECHA</li>

</ul>

</div>

<div class="section slide level1" id="debian-deriving">

<h1>Debian deriving</h1>

<ul>

<li>Try use <strong>live-builder</strong>...</li>

</ul>

</div>

<div class="section slide level1" id="debian---blends">

<h1>Debian - blends</h1>

<ul>

<li>Optimizing Debian itself for special purpose use</li>

</ul>

<ul>

<li>Merging back derived work into Debian</li>

</ul>

</div>

<div class="section slide level1" id="debian---existing-blends">

<h1>Debian - existing blends</h1>

<ul>

<li>Debian Jr</li>

<li>Debian Med</li>

<li>Debian Edu</li>

<li>Debian Science</li>

<li>Debian EzGo</li>

<li>BrDesktop</li>

<li>Debian Accessibility</li>

<li>Debian Lex</li>

<li>DebiChem</li>

<li>Debian GIS</li>

<li>Debian Multimedia</li>

</ul>

</div>

<div class="section slide level1" id="debian---future-blends">

<h1>Debian - future blends</h1>

<ul>

<li>FreedomBox</li>

<li>Debian LAN</li>

<li>SWECHA?</li>

</ul>

</div>

<div class="section slide level1" id="debian-blending">

<h1>Debian blending</h1>

<ul>

<li>Join existing teams</li>

<li>Convince Debian Developers to create new teams</li>

<li>Try use <strong>boxer</strong></li>

</ul>

</div>

<div class="section slide level1" id="debian-pure-blends---benefits">

<h1>Debian Pure Blends - Benefits</h1>

<ul>

<li>backed by Debian - help, bug tracking, translations, etc.</li>

<li>teamwork - others might help you refine and maintain your setups</li>

<li>common structures - others might take over if you loose interest</li>

</ul>

</div>

<div class="section slide level1" id="debian-pure-blends---downsides">

<h1>Debian Pure Blends - downsides</h1>

<ul>

<li><strong>annoying</strong> - Debian package maintainers may not like proposed changes</li>

<li><strong>slow</strong> - stable distribution is released infrequently</li>

<li><strong>rigid</strong> - all contributions must match Debian Free Software Guidelines</li>

<li><strong>complex</strong> - packages must obey Debian Policy</li>

</ul>

</div>

<div class="section slide level1" id="tech---debian-support-overloading-choices">

<h1>Tech - Debian support overloading choices</h1>

<ul>

<li>Debian installer</li>

<li>tasksel</li>

<li>debconf</li>

<li>aptitude</li>

</ul>

</div>

<div class="section slide level1" id="tech---examples-of-non-pure-blending">

<h1>Tech - examples of non-pure blending</h1>

<ul>

<li>include non-Debian packages or non-packaged stuff</li>

<li>include Debian packages from different Debian suite</li>

<li>configure system other than via Debian package installation</li>

<li>install using non-Debian media</li>

</ul>

<p>You don't own your system - you provide one for others to own.</p>

<p>So don't refine it like a (sloppy) user: Handle it like a Debian developer!</p>

</div>

<div class="section slide level1" id="tech---debian-generic-setup">

<h1>Tech - Debian, generic setup</h1>

<ul>

<li>select package profile(s)</li>

<li>install</li>

</ul>

</div>

<div class="section slide level1" id="tech---debian-hand-tuned">

<h1>Tech - Debian, hand-tuned</h1>

<ul>

<li>select package profile(s)</li>

<li>select additional packages</li>

<li>install</li>

<li>(re)configure packages</li>

</ul>

</div>

<div class="section slide level1" id="tech---debian-auto-tuned">

<h1>Tech - Debian, auto-tuned</h1>

<ul>

<li>pre-seed package selection</li>

<li>pre-seed package configurations</li>

<li>install</li>

<li>(re)configure non-debconf packages</li>

</ul>

</div>

<div class="section slide level1" id="tech---debian-pure-blend-generic">

<h1>Tech - Debian Pure Blend = generic</h1>

<ul>

<li>select blend profile</li>

<li>install</li>

</ul>

</div>

<div class="section slide level1" id="tech---tasks-involved">

<h1>Tech - tasks involved</h1>

<ul>

<li>extra software → into Debian officially</li>

<li>manual configurations → preseeding</li>

<li>maybe create temporary dirty hacks</li>

<li>maybe use/create reusable tweaks</li>

<li>eliminate dirty hacks and tweaks</li>

<li>convince others in Debian to add as tasksel task</li>

</ul>

</div>

<div class="section slide level1" id="tech---blends-dev">

<h1>Tech - blends-dev</h1>

<p>Tool to help maintain package lists and prospective packages.</p>

<p>Example: <a href="http://debian-med.alioth.debian.org/tasks/psychology"><code class="url">http://debian-med.alioth.debian.org/tasks/psychology</code></a></p>

</div>

<div class="section slide level1" id="tech---dirty-tricks">

<h1>Tech - dirty tricks</h1>

<p>Avoid configuration files...</p>

<ul>

<li>config.d folders</li>

<li>databases</li>

<li>networked data</li>

</ul>

</div>

<div class="section slide level1" id="tech---tweaks">

<h1>Tech - tweaks</h1>

<p>Reusable scripts compatible with one or more of...</p>

<ul>

<li>hands-off at http://hands.com/d-i/</li>

<li>CFengine</li>

<li>Puppet</li>

</ul>

</div>

<div class="section slide level1" id="tech---good-style">

<h1>Tech - good style</h1>

<ul>

<li>Aptitude</li>

<li>debconf</li>

<li>Config::Model</li>

</ul>

</div>

<div class="section slide level1" id="tech---when-is-it-pure">

<h1>Tech - When is it &quot;Pure&quot;?</h1>

<p>When all is in Debian, with no dirty tricks:</p>

<ul>

<li>package selection(s)</li>

<li>customizations</li>

<li>installation</li>

</ul>

</div>

<div class="section slide level1" id="team---getting-involved">

<h1>Team - getting involved</h1>

<ul>

<li>identify and isolate tweaks at your own system</li>

<li>register missing software - on wiki page or (better!) in Debian BTS</li>

<li>write documentation</li>

<li>write the dream of how things ought to work</li>

<li>wite how details work now</li>

<li>discuss downstream (i.e. with users and subdistros) how things work / should work</li>

<li>discuss upstream (i.e. with authors) what is possible now / soon</li>

</ul>

</div>

<div class="section slide level1" id="team---getting-involved-ii">

<h1>Team - getting involved II</h1>

<ul>

<li>write intro for peer enthusiasts</li>

<li>decide and document ideal formats - translations, graphics etc.</li>

<li>prioritize pending tasks - of various kinds to encourage many different contributions</li>

<li>document where it is ok to ask beginners' questions</li>

<li>document if beginners can ask for a mentor</li>

</ul>

</div>

<div class="section slide level1" id="team---getting-involved-iii">

<h1>Team - getting involved III</h1>

<ul>

<li>make illustration</li>

<li>make screendumps</li>

<li>make fan graphics</li>

<li>make desktop backgrounds, CD covers, stickers, etc.</li>

<li>Register the project as a DOAP file, and maybe at Ohloh and Freshmeat etc.</li>

<li>Register and maintain relevant Debtags</li>

</ul>

</div>

<div class="section slide level1" id="team---getting-involved-iv">

<h1>Team - getting involved IV</h1>

<ul>

<li>Translate package descriptions</li>

<li>Translate debconf dialogs</li>

<li>Translate upstream code</li>

</ul>

</div>

<div class="section slide level1" id="team---getting-involved-v">

<h1>Team - getting involved V</h1>

<ul>

<li>Help integrate contributions from graphics artists, translators and others</li>

<li>document decision processes of the team (and Debian and upstreams?)</li>

<li>document workflows in teams</li>

<li>insist on transparency - not only for code!</li>

</ul>

</div>

<div class="section slide level1" id="team---continuous-status-checks">

<h1>Team - Continuous status checks</h1>

<ul>

<li>Ask users about their needs - you will forget over time!</li>

<li>Ask teams about their tasks - each participant has slightly different perception of the common vision and status</li>

<li>Ask upstreams about use: perhaps potentials are missed, or code or persons feel as being abused</li>

</ul>

</div>

<div class="section slide level1" id="debian-pure-blends---future">

<h1>Debian Pure Blends - Future</h1>

<ul>

<li>debconf dontcare vs. explicit choice of default option</li>

<li>debconf query mechanism (and fill buffer from live system)</li>

<li>APT explicit choice of alternate dependency/recommendation</li>

<li>APT dontcare vs. explicit choice of default dependency/recommendation</li>

<li>Config::Model - semantic configfile handling</li>

</ul>

</div>

<div class="section slide level1" id="the-end">

<ul>

<li>Me: <script type="text/javascript">

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</script><noscript>&#100;&#114;&#32;&#x61;&#116;&#32;&#106;&#x6f;&#110;&#x65;&#x73;&#32;&#100;&#x6f;&#116;&#32;&#100;&#x6b;</noscript></li>

<li>Debian: <a href="http://www.debian.org"><code class="url">http://www.debian.org</code></a></li>

<li>Debian Derivatives Census: <a href="http://wiki.debian.org/Derivatives/Census"><code class="url">http://wiki.debian.org/Derivatives/Census</code></a></li>

<li>This talk: <a href="http://dr.jones.dk/blends/talk/nitte"><code class="url">http://dr.jones.dk/blends/talk/nitte</code></a></li>

<li>Illustrations: <a href="http://sirireiter.dk/blog/entry/110310/"><code class="url">http://sirireiter.dk/blog/entry/110310/</code></a></li>

<li>Asia trip: <a href="http://wiki.jones.dk/DebianAsia2011"><code class="url">http://wiki.jones.dk/DebianAsia2011</code></a></li>

</ul>

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