How can I make a dot desktop file for Enlightenment Version 1.0x (AKA DR16 or E16)?

I recently made E16 work on Trisquel but I can't make it start from a display manager. I copied an existing desktop file in /usr/share/xsessions and pointed to the enlightenment binary but choosing it from the pulldown menu just gives me a blank screen. I can make E16 start by leaving the screen blank and launching the command from a virtual console.

Anyone who's interested can find details here,

http://50.81.205.197/photo_album/chron/2017/2017_02_03-trisquel_e16_gnome/