Install this version:
emerge -a =app-emacs/yaml-9999
If this version is masked, you can unmask it using the autounmask tool or standard emerge options:
autounmask =app-emacs/yaml-9999
Or alternatively:
emerge --autounmask-write -a =app-emacs/yaml-9999
# Copyright 1999-2021 Gentoo Authors # Distributed under the terms of the GNU General Public License v2 EAPI=8 NEED_EMACS="25.1" inherit elisp git-r3 DESCRIPTION="YAML parser for Elisp" HOMEPAGE="https://github.com/zkry/yaml.el" EGIT_REPO_URI="https://github.com/zkry/yaml.el.git" KEYWORDS="~amd64 ~x86" LICENSE="GPL-3" SLOT="0"