Install this version:
emerge -a =app-emacs/pinentry-9999
If this version is masked, you can unmask it using the autounmask tool or standard emerge options:
autounmask =app-emacs/pinentry-9999
Or alternatively:
emerge --autounmask-write -a =app-emacs/pinentry-9999
# Copyright 1999-2021 Gentoo Authors # Distributed under the terms of the GNU General Public License v2 EAPI=8 NEED_EMACS="24" inherit elpa DESCRIPTION="GnuPG Pinentry server implementation" KEYWORDS="~amd64 ~x86" SLOT="0" RDEPEND=" >=app-crypt/gnupg-2.1.5 "