Add helper script to autobuild

manifest.scm

@@ -2,6 +2,13 @@
              (gnu packages base)
              (gnu packages compression)
              (gnu packages guile)
-             (gnu packages guile-xyz))
+             (gnu packages guile-xyz)
+             (gnu packages rust-apps))
 
-(packages->manifest (list guile-colorized guile-readline guile-next guile-hoot gnu-make zip))
+(packages->manifest (list guile-colorized
+                          guile-readline
+                          guile-next
+                          guile-hoot
+                          gnu-make
+                          watchexec
+                          zip))

watch-build

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+watchexec -w . make