commit 2579ff9088deae6ef0cdb3a0f3fe0d04e7d7718a
from: Omar Polo <op@omarpolo.com>
date: Sun Sep 25 22:13:16 2022 UTC

include <grp.h> (setgroups) for portability

linux has it there...

commit - 925a5bc8e206d64186340b8d02dc397007e4e28a
commit + 2579ff9088deae6ef0cdb3a0f3fe0d04e7d7718a
blob - 3fc07eaa6783b32515760bb9b6f75e6b35b3d755
blob + 892d9968dadc166349f602d673a39f7fc3b5aaa3
--- proc.c
+++ proc.c
@@ -24,6 +24,7 @@
 #include <sys/wait.h>
 
 #include <fcntl.h>
+#include <grp.h>
 #include <limits.h>
 #include <stdio.h>
 #include <stdlib.h>