Adding initial implementation of taskset
diff --git a/toys.h b/toys.h
index a333986..a03ed7c 100644
--- a/toys.h
+++ b/toys.h
@@ -21,6 +21,7 @@
 #include <pwd.h>
 #include <sched.h>
 #include <setjmp.h>
+#include <sched.h>
 #include <shadow.h>
 #include <stdarg.h>
 #include <stdint.h>