If dev-libs/libedit is installed and readline USE is enabled on net-misc/chrony, the chrony build will link and use dev-libs/libedit instead of sys-libs/readline. To disable this behavior, add --without-editline to the configure parameters according to the configure file.
(In reply to Brian Evans from comment #0) > To disable this behavior, add --without-editline to the configure parameters > according to the configure file. Even more than that seems to be needed. The configure script accepts --disable-readline, --without-readline and --without-editline, and they don't necessarily mean what we think they mean.
I have added IUSE=libedit and a REQUIRED_USE restricting choice to at most one of IUSE="libedit readline". This will probably upset some people so it's in -r1.