saving uncommitted changes in /etc prior to emerge run

systemd/system/spamassassin.service.d/00gentoo.conf

@@ -0,0 +1,10 @@
+# Here you can append some options to spamd process, please
+# double check that you make needed changes in service file if
+# you use options requiring it
+# Some options:
+#
+# -c          to create a per user configuration file
+# -H [dir]    to switch home dirs for helper apps, dir optional
+
+[Service]
+Environment="SPAMD_OPTS= -c -H"