Missing runtime dependency in x11-wm/xmonad-0.8.1 ebuild: dev-libs/libffi - xmonad refuses to run without that library. Reproducible: Always Steps to Reproduce:
/tmp/xmonad-0.8.1 $ grep -r -i ffi * TODO: - When are borders set? Prove that the current handling is sufficient. Nope, there's no reference to libffi in xmonad at all.
Oh, right, sorry. My xmonad binary was built on a Debian system on the same box sharing the home directory... In Debian, xmonad actually depends on libffi5. That's why I got: /home/nico/.xmonad/xmonad-i386-linux: error while loading shared libraries: libffi.so.5: cannot open shared object file: No such file or directory Installing dev-libs/libffi solved my special problem on Gentoo.