Install this version:
emerge -a =app-emacs/mode-line-debug-20260601.1514
If this version is masked, you can unmask it using the autounmask tool or standard emerge options:
autounmask =app-emacs/mode-line-debug-20260601.1514
Or alternatively:
emerge --autounmask-write -a =app-emacs/mode-line-debug-20260601.1514
# automatically generated by g-sorcery
# please do not edit this file
EAPI=8
REPO_URI="https://melpa.org/packages/"
SOURCE_TYPE="tar"
REALNAME="mode-line-debug"
DIGEST_SOURCES="yes"
inherit g-sorcery gs-elpa
DESCRIPTION="Show status of debug-on-error in mode-line"
HOMEPAGE="https://github.com/tarsius/mode-line-debug"
SRC_URI="${REPO_URI}${REALNAME}-${PV}.${SUFFIX}"
SLOT="0"
KEYWORDS="~amd64 ~x86"
DEPEND="app-emacs/compat"
RDEPEND="app-emacs/compat"