As suggested by DISTRO_PORTING.
Package-Manager: portage-2.3.2_p1
--- /dev/null
+--- a/src/login/systemd-user.m4
++++ b/src/login/systemd-user.m4
+@@ -9,4 +9,5 @@
+ session required pam_selinux.so nottys open
+ )m4_dnl
+ session required pam_loginuid.so
++session required pam_limits.so
+ session optional pam_systemd.so
local PATCHES=(
"${FILESDIR}/218-Dont-enable-audit-by-default.patch"
"${FILESDIR}/228-noclean-tmp.patch"
+ "${FILESDIR}/232-systemd-user-pam.patch"
)
[[ -d "${WORKDIR}"/patches ]] && PATCHES+=( "${WORKDIR}"/patches )