Use manifest for cron

cron-scripts/10-test.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/env -S guix shell bash -- bash
+#!/usr/bin/env -S guix shell --manifest=cron-manifest.scm -- bash
 
 test -e /tmp/cron-10-test.sh.lock && find /tmp/cron-10-test.sh.lock -cmin +10 -delete
 
@@ -13,16 +13,18 @@ touch /tmp/cron-10-test.sh.lock
 
 set -x
 
+INVENTORY_FILE=/data/xhrpb-guix-config/inventory
+
 mac=$(ip link show  | awk '/link\/ether/{ print $2 }' | head -n1 | sed 's/://g')
 
-hostname=$(grep "^$mac" inventory | awk '{ print $2 }')
+hostname=$(grep "^$mac" "$INVENTORY_FILE" | awk '{ print $2 }')
 
 if test -z "$hostname"
 then
   hostname=guix-template
 fi
 
-host_conf=$(hostname).scm
+host_conf=${hostname}.scm
 
 cd /data/xhrpb-guix-config
 

cron-scripts/cron-manifest.scm

@@ -0,0 +1,4 @@
+(use-modules (gnu packages linux)             ;for 'ip'
+             (gnu packages version-control))  ;for 'git'
+
+(specifications->manifest '("bash" "iproute2" "git"))