Install this version:
emerge -a =kde-plasma/flatpak-kcm-6.6.4
If this version is masked, you can unmask it using the autounmask tool or standard emerge options:
autounmask =kde-plasma/flatpak-kcm-6.6.4
Or alternatively:
emerge --autounmask-write -a =kde-plasma/flatpak-kcm-6.6.4
# Copyright 2023-2026 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
KFMIN=6.22.0
QTMIN=6.10.1
inherit ecm plasma.kde.org xdg
DESCRIPTION="Flatpak Permissions Management KCM"
HOMEPAGE="https://invent.kde.org/plasma/flatpak-kcm"
LICENSE="GPL-2 LGPL-2.1+"
SLOT="6"
KEYWORDS="~amd64 ~arm64 ~loong ~ppc64 ~riscv ~x86"
IUSE=""
DEPEND="
dev-libs/glib:2
>=dev-qt/qtbase-${QTMIN}:6
>=dev-qt/qtdeclarative-${QTMIN}:6[widgets]
>=dev-qt/qtsvg-${QTMIN}:6
>=kde-frameworks/kcmutils-${KFMIN}:6
>=kde-frameworks/kconfig-${KFMIN}:6
>=kde-frameworks/kcoreaddons-${KFMIN}:6
>=kde-frameworks/kdeclarative-${KFMIN}:6
>=kde-frameworks/ki18n-${KFMIN}:6
>=kde-frameworks/kitemmodels-${KFMIN}:6
>=kde-frameworks/kservice-${KFMIN}:6
>=sys-apps/flatpak-0.11.8
"
RDEPEND="${DEPEND}
>=kde-frameworks/kirigami-${KFMIN}:6
"
BDEPEND=">=kde-frameworks/kcmutils-${KFMIN}:6"
dev-libs/glib:2 >=dev-qt/qtbase-6.10.1:6 >=dev-qt/qtdeclarative-:6[widgets] >=dev-qt/qtsvg-:6 >=kde-frameworks/kcmutils-6.22.0:6 >=kde-frameworks/kconfig-:6 >=kde-frameworks/kcoreaddons-:6 >=kde-frameworks/kdeclarative-:6 >=kde-frameworks/ki18n-:6 >=kde-frameworks/kitemmodels-:6 >=kde-frameworks/kservice-:6 >=sys-apps/flatpak-0.11.8
dev-libs/glib:2 >=dev-qt/qtbase-6.10.1:6 >=dev-qt/qtdeclarative-:6[widgets] >=dev-qt/qtsvg-:6 >=kde-frameworks/kcmutils-:6 >=kde-frameworks/kconfig-:6 >=kde-frameworks/kcoreaddons-:6 >=kde-frameworks/kdeclarative-:6 >=kde-frameworks/ki18n-:6 >=kde-frameworks/kitemmodels-:6 >=kde-frameworks/kservice-:6 >=sys-apps/flatpak-0.11.8 >=kde-frameworks/kirigami-6.22.0:6
>=kde-frameworks/kcmutils-6.22.0:6