'is not within a known GOPATH/src' error on dep init : <p>When I run <code>dep init</code> in project folder, the error occurs:</p>

<blockquote>
  <p>init failed: unable to detect the containing GOPATH: D:\projects\foo is not within a known GOPATH/src</p>
</blockquote>

<p>My projects are located on another drive and not <code>%GOPATH%/src</code> (i.e.  <code>%USERPROFILE%\go\src</code>).</p>

<p>It's a known error but it's unclear what is the solution.</p>

<p>How can I use <code>dep</code> without moving Go projects to <code>%GOPATH%/src</code>?</p>
