Install this version:
emerge -a =app-emacs/evil-numbers-0.8
If this version is masked, you can unmask it using the autounmask tool or standard emerge options:
autounmask =app-emacs/evil-numbers-0.8
Or alternatively:
emerge --autounmask-write -a =app-emacs/evil-numbers-0.8
# automatically generated by g-sorcery
# please do not edit this file
EAPI=8
REPO_URI="https://elpa.nongnu.org/nongnu/"
SOURCE_TYPE="tar"
REALNAME="evil-numbers"
DIGEST_SOURCES="yes"
inherit g-sorcery gs-elpa
DESCRIPTION="Increment/decrement numbers like in VIM"
HOMEPAGE="http://github.com/juliapath/evil-numbers"
SRC_URI="${REPO_URI}${REALNAME}-${PV}.${SUFFIX}"
SLOT="0"
KEYWORDS="~amd64 ~x86"
DEPEND="app-emacs/evil
app-emacs/shift-number"
RDEPEND="app-emacs/evil
app-emacs/shift-number"
app-emacs/evil app-emacs/shift-number
app-emacs/evil app-emacs/shift-number