title: The package is not available in a stable-enough version
body: <p>Following situation:</p>
  
  <ul>
  <li>app requires <code>andig/dbcopy</code> in dev version: 
  <code>composer require andig/dbcopy:dev-master</code></li>
  <li><p><code>andig/dbcopy</code> requires <code>symfony/console</code>in dev version (due to a bug in 2.5):</p>
  
  <pre><code>"require": {
      "doctrine/dbal": "2.4.*",
      "symfony/console": "2.6.*@dev"
  },
  </code></pre></li>
  </ul>
  
  <p>Now, when adding <code>andig/dbcopy</code> to the app using <code>composer require</code>, composer complains about stability:</p>
  
  <pre><code>Your requirements could not be resolved to an installable set of packages.
  
    Problem 1
      - Installation request for andig/dbcopy dev-master -&gt; satisfiable by andig/dbcopy[dev-master].
      - andig/dbcopy dev-master requires symfony/console 2.6.*@dev -&gt; no matching package found.
  
  Potential causes:
   - A typo in the package name
   - The package is not available in a stable-enough version according to your minimum-stability setting
     see &lt;https://groups.google.com/d/topic/composer-dev/_g3ASeIFlrc/discussion&gt; for more details.
  </code></pre>
  
  <p>No <code>minimum-stability</code> settings have been defined, the app already has a dependency on a <code>dev-master</code> package.</p>
  
  <p>I've read <a href="https://groups.google.com/forum/#!topic/composer-dev/_g3ASeIFlrc/discussion" rel="noreferrer">https://groups.google.com/forum/#!topic/composer-dev/_g3ASeIFlrc/discussion</a> but I'm still confused as to why composer fails to install even though </p>
  
  <ul>
  <li>all stability settings are explicitly defined and</li>
  <li>the app itself already has another dependency on "dev-master" which works?</li>
  </ul>