>>> Installing (1 of 14) sys-boot/lilo-24.1::gentoo * One or more files installed to this package are set to be installed to * read-only filesystems. Please mount the following filesystems as read- * write and retry. * * /boot * * Package 'sys-boot/lilo-24.1' NOT merged due to read-only file systems. * If necessary, refer to your elog messages for the whole content of the * above message. The package used to install because mount-boot.eclass detected the case and remounted it r/w in pkg_preinst(). Not saying it's sane thing to do, just pointing out it's broken now. Maybe it's a good pretext to get rid of insanities like this.
*** This bug has been marked as a duplicate of bug 532264 ***