https://bugs.gentoo.org/915699
https://github.com/cronie-crond/cronie/commit/1a6bed1dcf1871c47fdc6d5957f00eae5a854cc7

From 1a6bed1dcf1871c47fdc6d5957f00eae5a854cc7 Mon Sep 17 00:00:00 2001
From: Christian Hesse <mail@eworm.de>
Date: Fri, 13 Oct 2023 11:17:12 +0200
Subject: [PATCH] make the environment file optional

Starting the daemon works without additional environment variables, so
make the file optional.
--- a/contrib/cronie.systemd
+++ b/contrib/cronie.systemd
@@ -3,7 +3,7 @@ Description=Command Scheduler
 After=auditd.service nss-user-lookup.target systemd-user-sessions.service time-sync.target ypbind.service autofs.service
 
 [Service]
-EnvironmentFile=/etc/sysconfig/crond
+EnvironmentFile=-/etc/sysconfig/crond
 ExecStart=/usr/sbin/crond -n $CRONDARGS
 ExecReload=/bin/kill -URG $MAINPID
 KillMode=process