add soft restart option to liminix-rebuild

instead of doing a full reboot, it runs activate / and uses
s6-rc-update to install the new service database

tests/min-copy-closure/test-liminix-rebuild.sh

@@ -10,6 +10,17 @@
 
 set -e
 
+while test -n "$1"; do
+    case $1 in
+	--fast)
+	    FAST=true
+	    ;;
+	*)
+	    ;;
+    esac
+    shift
+done
+
 here=$(pwd)/tests/min-copy-closure
 top=$(pwd)
 
@@ -32,7 +43,7 @@ mkdir ./vm
 
 cat ${rootfs} > rootfs
 
-truncate -s 24M rootfs
+truncate -s 32M rootfs
 resize2fs rootfs
 
 dd if=rootfs of=disk-image bs=512 seek=4 conv=sync
@@ -51,9 +62,12 @@ echo "READY"
 touch known_hosts
 export SSH_COMMAND="ssh -o UserKnownHostsFile=${work}/known_hosts -o StrictHostKeyChecking=no -p 2022 -i ${here}/id"
 
-(cd ${top} && liminix-rebuild root@localhost -I liminix-config=${here}/with-figlet.nix  --arg device "import ./devices/qemu-armv7l")
+if test -n "$FAST"; then
+    (cd ${top} && liminix-rebuild --fast root@localhost -I liminix-config=${here}/with-figlet.nix  --argstr deviceName qemu-armv7l)
+    cd ${work} && expect $here/wait-for-soft-restart.expect
+else
+    (cd ${top} && liminix-rebuild root@localhost -I liminix-config=${here}/with-figlet.nix  --arg device "import ./devices/qemu-armv7l")
+    cd ${work} && expect $here/wait-for-reboot.expect
+fi
 
-ls -l vm
-
-cd ${work} && expect $here/wait-for-reboot.expect
 cd / ; rm -rf $work