marlin/buildroot/share/PlatformIO/scripts/random-bin.py

#
# random-bin.py
# Set a unique firmware name based on current date and time
#
import pioutil
if pioutil.is_pio_build():
    from datetime import datetime
    Import("env")
    env['PROGNAME'] = datetime.now().strftime("firmware-%Y%m%d-%H%M%S")