home-assistant.github.io/developers/development_environment/index.html
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<h1 class="title indent">
Set Up Development Environment
</h1>
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<p>Youll need to set up a development environment if you want to develop a new feature or component for Home Assistant. Read on to learn how to set up.</p>
<h3><a class="title-link" name="setup-local-repository" href="#setup-local-repository"></a> Setup Local Repository</h3>
<p>Visit the <a href="https://github.com/home-assistant/home-assistant">Home Assistant repository</a> and click <strong>Fork</strong>.
Once forked, setup your local copy of the source using the commands:</p>
<div class="language-bash highlighter-rouge"><pre class="highlight"><code><span class="gp">$ </span>git clone https://github.com/YOUR_GIT_USERNAME/home-assistant.git
<span class="gp">$ </span><span class="nb">cd </span>home-assistant
<span class="gp">$ </span>git remote add upstream https://github.com/home-assistant/home-assistant.git
</code></pre>
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<h3><a class="title-link" name="prepare-your-environment" href="#prepare-your-environment"></a> Prepare Your Environment</h3>
<h4><a class="title-link" name="core-dependencies" href="#core-dependencies"></a> Core dependencies</h4>
<p>Install the core dependencies.</p>
<div class="language-bash highlighter-rouge"><pre class="highlight"><code><span class="gp">$ </span>sudo apt-get install python3-pip python3-dev
</code></pre>
</div>
<h4><a class="title-link" name="platform-dependencies" href="#platform-dependencies"></a> Platform dependencies</h4>
<p>In order to run <code class="highlighter-rouge">script/setup</code> below you will need some more dependencies.</p>
<div class="language-bash highlighter-rouge"><pre class="highlight"><code><span class="gp">$ </span>sudo apt-get install libssl-dev libxml2-dev libxslt1-dev libjpeg-dev libffi-dev libudev-dev
</code></pre>
</div>
<p class="note">
Different distributions have different package installation mechanisms and sometimes packages names as well. For example Centos would use: <code class="highlighter-rouge">sudo yum install epel-release &amp;&amp; sudo yum install python34 python34-devel mysql-devel</code>
</p>
<p>Additional dependencies exist if you you plan to perform Frontend Development, please read the <a href="https://home-assistant.io/developers/frontend/">Frontend</a> section to learn more.</p>
<h4><a class="title-link" name="setting-up-virtual-environment-optional" href="#setting-up-virtual-environment-optional"></a> Setting up virtual environment (optional)</h4>
<p>If you plan on providing isolation to your environment using <a href="https://docs.python.org/3.4/library/venv.html"><code class="highlighter-rouge">venv</code></a>. Within the <code class="highlighter-rouge">home-assistant</code> directory, create and activate your virtual environment.</p>
<div class="language-bash highlighter-rouge"><pre class="highlight"><code><span class="gp">$ </span>python3 -m venv venv
<span class="gp">$ </span><span class="nb">source </span>venv/bin/activate
</code></pre>
</div>
<p>Note, Debian does not ship a full Python3 package and so requires you to install <code class="highlighter-rouge">venv</code> manually <code class="highlighter-rouge">sudo apt-get install python3-venv</code>.</p>
<h3><a class="title-link" name="setup-and-run" href="#setup-and-run"></a> Setup and Run</h3>
<ul>
<li>On Mac OS X and Linux:</li>
</ul>
<div class="language-bash highlighter-rouge"><pre class="highlight"><code><span class="gp">$ </span><span class="nb">cd </span>home-assistant
<span class="gp">$ </span>script/setup
</code></pre>
</div>
<ul>
<li>
<p>On Windows, you can use <code class="highlighter-rouge">python setup.py develop</code> instead of the setup script.</p>
</li>
<li>
<p>Run <code class="highlighter-rouge">hass</code> to invoke your local installation.</p>
</li>
</ul>
<h3><a class="title-link" name="logging" href="#logging"></a> Logging</h3>
<p>By default logging in home-assistant is tuned for operating in
production (set to INFO by default, with some modules set to even less
verbose logging levels).</p>
<p>You can use the <a href="/components/logger/">logger</a> component to adjust
logging to DEBUG to see even more details about what is going on.</p>
<h3><a class="title-link" name="developing-on-windows" href="#developing-on-windows"></a> Developing on Windows</h3>
<p>If you are using Windows as a development platform, make sure that you have the correct Microsoft Visual C++ build tools installed. Check the <a href="https://wiki.python.org/moin/WindowsCompilers">Windows Compilers</a> section on the <a href="https://www.python.org/">Python website</a> for details. Validation using <code class="highlighter-rouge">tox</code> will fail if this is not done correctly.</p>
<p>Also, make sure to install or upgrade the <code class="highlighter-rouge">setuptools</code> Python package. It contains compatibility improvements and adds automatic use of compilers:</p>
<div class="language-bash highlighter-rouge"><pre class="highlight"><code><span class="gp">$ </span>pip install --upgrade setuptools
</code></pre>
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<h1 class="title delta">Development Guide</h1>
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