*/*: Those packages that I created install correctly for me with current Portage.

Feel free to fix them if they don't install at all or if you think they need some improvement.
www-apps/librarian might require proper logging and a SystemD service.
I used EGO_SUM instead of a vendor tarball because I've no way to host it but feel free to create one.

Signed-off-by: Benoît Dufour <benoit.dufour@mail.com>

acct-group/librarian/librarian-0.ebuild

@@ -0,0 +1,10 @@
+# Copyright 2020-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit acct-group
+
+DESCRIPTION="A group for www-apps/librarian"
+ACCT_GROUP_ID=-1
+SLOT="0"

acct-user/librarian/librarian-0.ebuild

@@ -0,0 +1,13 @@
+# Copyright 2019-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit acct-user
+
+DESCRIPTION="An user for www-apps/librarian"
+ACCT_USER_ID=-1
+ACCT_USER_GROUPS=( librarian )
+ACCT_USER_HOME="/var/cache/${PN}"
+acct-user_add_deps
+SLOT="0"

www-apps/librarian/files/librarian.initd

@@ -0,0 +1,16 @@
+#!/sbin/openrc-run
+# Copyright 2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+name="librarian"
+description="Private front-end for Odyssee"
+command=/usr/bin/librarian
+pidfile="/var/run/${RC_SVCNAME}.pid"
+command_user="librarian"
+command_background=true
+output_log="/var/log/librarian.log"
+error_log="${output_log}"
+
+start_pre() {
+	checkpath -fo librarian:librarian /var/log/librarian.log
+}