Use ldd
. Mina parece usar bibliotecas gtk2.
$ ldd /usr/bin/inkscape | grep gtk
libgtkmm-2.4.so.1 => /usr/lib/x86_64-linux-gnu/libgtkmm-2.4.so.1 (0x00007fa8de4d5000)
libgtkspell.so.0 => /usr/lib/libgtkspell.so.0 (0x00007fa8dcfe1000)
libgtk-x11-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0 (0x00007fa8dc9a7000)