Looks like upstream is dead and this requires old vala and libgee versions but, fortunately, seems that openSuSE and Arch people have patches to fix that compatibility issues (and they also apply some patches that could fix other bugs and, then, be also interesting). Not sure if you could look at them :) They are at: http://download.opensuse.org/source/factory/repo/oss/suse/src/synapse-0.2.10-11.1.src.rpm https://projects.archlinux.org/svntogit/community.git/tree/trunk?h=packages/synapse Thanks
+*synapse-0.2.10-r1 (14 Jan 2015) + + 14 Jan 2015; Pacho Ramos <pacho@gentoo.org> + +files/synapse-0.2.10-check-null-exec.patch, + +files/synapse-0.2.10-fix-border-painting.patch, + +files/synapse-0.2.10-fix-check-desktop.patch, + +files/synapse-0.2.10-gnome-3.10.patch, + +files/synapse-0.2.10-libgee-0.8.patch, +files/synapse-0.2.10-zeitgeist.patch, + +synapse-0.2.10-r1.ebuild: + Apply opensuse and Arch patches to fix support for current gnome, newer vala + and newer libgee (#527854) +
