Use absolute paths for . common

Otherwise it can pick up other common in PATH first...

run

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 set -eu
-. common
+. "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)/common"
 set -- ${cli_run:-} "$@"
 
 # CLI handling.
@@ -364,7 +364,7 @@ if "$tmux"; then
   fi
 fi
 cmd="time ${cmd}"
-if ! "$debug_vm"; then
+if [ -z "$debug_vm" ]; then
   cmd="${cmd} \
 |& tee >(ts -s %.s > ${common_termout_file}) \
 "