I use Eagle 7.4 in a Jessie chroot (on a Wheezy system).
In your Jessie, install the following things:
sudo apt-get install libx11-6 libxrender1 libxrandr2 libxcursor1 libfreetype6 \
libfontconfig1 libxext6 libxi6 libssl1.0.0 libcups2 libx11-xcb1
Then run the Eagle 7.4 installer:
bash eagle-lin64-7.4.0.run
I install into my home directory, so launch eagle via:
~/eagle-7.4.0/bin/eagle
Voila!
Just install the 32 bit version of Eagle on Wheezy, where you'll need all the above mentioned libraries in their i386 version installed, but if you enable multi-arch and add the i386 distribution to your dpkg, everything just works.