=== modified file 'sbin/ns_run'
--- old/sbin/ns_run	2021-12-16 15:21:31 +0000
+++ new/sbin/ns_run	2021-10-20 00:30:48 +0000
@@ -20,7 +20,6 @@
 ##            - anything you wish to call before and for dropping privs,
 ##              eg. s6-applyuidgid
 ##            All statically linked of course.
-##   NS_NO_PID1 - Allow not running as init process of the namespace.
 
 # import variables from environment, with defaults
 multisubstitute {
@@ -32,11 +31,7 @@
 
 # check we are PID1 (in a new PID namespace)
 getpid PID
-ifelse {
-	importas -D "" NS_NO_PID1 NS_NO_PID1 
-	if -x 0 { test -z $NS_NO_PID1 }
-	importas -i PID PID test 1 -ne $PID
-} {
+ifelse { importas -i PID PID test 1 -ne $PID } {
 	fdmove -c 1 2
 	echo "ns_run: fatal: not PID 1"
 	exit 111