Fix PIO venv activate message output (#968)

* move penv activate & fix output

* move penv activate back to top

Author: benjamink

build.sh

@@ -159,11 +159,14 @@ if [ $BUILD_ALL -eq 1 ] ; then
   exit $?
 fi
 
+##############################################################
 # Set up the virtual environment if it exists
 if [[ -d "$PIO_VENV_ROOT" && "$VIRTUAL_ENV" != "$PIO_VENV_ROOT" ]] ; then
   echo "Activating virtual environment"
   [[ -z "$VIRTUAL_ENV" ]] && deactivate &>/dev/null
   source "$PIO_VENV_ROOT/bin/activate"
+elif [[ -d "$PIO_VENV_ROOT" && "$VIRTUAL_ENV" == "$PIO_VENV_ROOT" ]] ; then
+  echo "Virtual environment already activated at $PIO_VENV_ROOT"
 else
   echo "Warning: Virtual environment not found in $PIO_VENV_ROOT. Continuing without it."
 fi