title: How to install a development version of R package from google code and/or launchpad.net?
body: <p>Some development versions of R packages are hosted on google code and/or launchpad.net.</p>
  
  <p>Is it possible to install the newest release of these packages directly from google code and/or launchpad.net as from other repositories?</p>
  
  <p><em>ie. not downloading the source from the site through a browser and then attempting to install the source</em></p>
  
  <p>If so, how?</p>
  
  <p>The package I wish to install is "igraph".</p>
  
  <p>The development version of this package seems to be hosted at:</p>
  
  <p><a href="http://code.google.com/p/igraph/downloads/list" rel="nofollow noreferrer">http://code.google.com/p/igraph/downloads/list</a><br>
  and<br>
  <a href="https://code.launchpad.net/~igraph/igraph/0.6-main" rel="nofollow noreferrer">https://code.launchpad.net/~igraph/igraph/0.6-main</a></p>
  
  <p>As a bonus, is it possible to do the same for packages hosted on sourceforge.net?</p>
  
  <p>PS:  I believe this is different enough from my past question to warrant a separate question:  <a href="https://stackoverflow.com/questions/9656016/how-to-install-development-version-of-r-packages">How to install development version of R packages github repository</a></p>