Install this version:
emerge -a =x11-themes/gnome-backgrounds-50.0
If this version is masked, you can unmask it using the autounmask tool or standard emerge options:
autounmask =x11-themes/gnome-backgrounds-50.0
Or alternatively:
emerge --autounmask-write -a =x11-themes/gnome-backgrounds-50.0
# Copyright 1999-2026 Gentoo Authors # Distributed under the terms of the GNU General Public License v2 EAPI=8 inherit gnome.org meson DESCRIPTION="A set of backgrounds packaged with the GNOME desktop" HOMEPAGE="https://gitlab.gnome.org/GNOME/gnome-backgrounds" LICENSE="CC-BY-SA-2.0 CC-BY-SA-3.0 CC-BY-2.0 CC-BY-4.0" SLOT="0" KEYWORDS="~amd64 ~arm ~arm64 ~loong ~riscv ~x86" RDEPEND=" media-libs/libjxl[gdk-pixbuf] gnome-base/librsvg " BDEPEND=">=sys-devel/gettext-0.19.8"
media-libs/libjxl[gdk-pixbuf] gnome-base/librsvg
>=sys-devel/gettext-0.19.8