While emerge -uDNva world media-libs/jpeg 7 has been installed. All other packages could be fixed by rebuild, but eagle 5.6 seems to need jpeg7. Reproducible: Always Expected Results: Ebuild should depend on the needed lib jpeg.
It's a "binary only" package? Try media-libs/jpeg-compat.
+ 10 Oct 2009; Samuli Suominen <ssuominen@gentoo.org> eagle-5.6.0.ebuild: + jpeg-compat RDEPEND because /opt/eagle-5.6.0/bin/eagle is linked against + libjpeg.so.62 wrt #288439.