How do I cause standalone X11 apps to use MacPorts X11?

[Jeremy Lavergne]

This might really depend on the application: is it checking for x11 or giving up based on the OS?

On March 26, 2014 12:44:52 PM EDT, Kevin Reid <kpreid at switchb.org> wrote:
>When I run X11 applications built by MacPorts, they open in the X11
>server “app” built by MacPorts (/Applications/MacPorts/X11.app). When I
>run separately distributed Mac-packaged X11 applications (MCEdit,
>Closure (the game)), it opens the “X11 is no longer included with OS X”
>dialog.
>
>How do I get these applications to recognize MacPorts' X11?
>
>I tried searching for existing advice and the most relevant-sounding
>thing I found was 
>this:
>http://superuser.com/questions/459273/x11-and-mountain-lion-how-to-use-macports-xorg-server
>which suggested such mucking-about-with-system-files as "sudo ln -s
>/opt/X11 /usr/X11".
>
>Is there a clean way to get these apps working?