Local copy of remote index is up-to-date and will be used.

These are the packages that would be merged, in order:

Calculating dependencies... done!

The following keyword changes are necessary to proceed:
 (see "package.accept_keywords" in the portage(5) man page for more details)
# required by @custom
# required by @selected
# required by @world (argument)
=net-misc/megatools-1.11.0 ~amd64

Would you like to add these changes to your config files? [Yes/No] Yes

Autounmask changes successfully written.

 * IMPORTANT: config file '/etc/portage/package.accept_keywords/custom' needs updating.
 * See the CONFIGURATION FILES and CONFIGURATION FILES UPDATE TOOLS
 * sections of the emerge man page to learn how to update config files.

!!! The ebuild selected to satisfy "net-misc/networkmanager" has unmet requirements.
- net-misc/networkmanager-1.40.6::gentoo USE="concheck connection-sharing dhclient gtk-doc iptables modemmanager nss ppp tools wext wifi -audit -bluetooth -debug -dhcpcd -elogind -gnutls -introspection -iwd -libedit -lto -nftables -ofono -ovs -policykit -psl -resolvconf (-selinux) -syslog (-systemd) -teamd -test -vala" ABI_X86="(64) -32 (-x32)"

  The following REQUIRED_USE flag constraints are unsatisfied:
    gtk-doc? ( introspection )

  The above constraints are a subset of the following complete expression:
    bluetooth? ( modemmanager ) connection-sharing? ( any-of ( iptables nftables ) ) gtk-doc? ( introspection ) iwd? ( wifi ) vala? ( introspection ) wext? ( wifi ) exactly-one-of ( gnutls nss ) at-most-one-of ( elogind systemd ) at-most-one-of ( dhclient dhcpcd ) at-most-one-of ( syslog systemd )

(dependency required by "net-libs/libproxy-0.4.18::gentoo[networkmanager]" [ebuild])
(dependency required by "net-libs/glib-networking-2.74.0::gentoo[libproxy]" [ebuild])
(dependency required by "net-misc/megatools-1.11.0::gentoo" [ebuild])
(dependency required by "@custom" [set])
(dependency required by "@selected" [set])
(dependency required by "@world" [argument])