title: Lua: Install a rock using luarocks from a locally installed rock (or from a .zip/.tar.gz)
body: <p>I hunted around but I couldn't determine if this is possible.</p>
  
  <p>Basically, <a href="http://luarocks.org" rel="noreferrer">http://luarocks.org</a> is down, and I already have a copy of luafilesystem installed on another machine locally here.  With Ruby, it's possible to cross install ruby gems using the 'gem' command locally.  I'm wondering if the same is possible with rocks and luarocks.</p>
  
  <p>Is there any way to 'cross-install' a rock (for instance, luafilesystem), by using another local installation of that rock?</p>
  
  <p>Something like:</p>
  
  <p><code>luarocks install //10.0.1.123/machine/path/to/luafilesystem/on/other/machine</code></p>
  
  <p>is what I'd like to be able to do.</p>
  
  <p>UPDATE: I'd even be happy with how to install a rock from the .tar.gz or .zip, for instance, if I downloaded one of the images from <a href="http://files.luaforge.net/releases/luafilesystem/luafilesystem/luafilesystem-1.4.2" rel="noreferrer">this location</a> (in the case of LuaFileSystem). </p>
  
  <p>In which case, the 'source' for the install would / could be local to the machine, rather than remote (and wouldn't necessarily already be installed as a rock).</p>