lgpio.error: 'GPIO busy' on Raspbian Bookworm

[kancelott]

Despite enabling SPI on my Raspberry Pi Zero W, I get GPIO busy on the latest Raspbian Bookworm.

Traceback (most recent call last):
  File "/home/pi/Pimoroni/unicornhatmini/examples/./demo.py", line 16, in <module>
    unicornhatmini = UnicornHATMini()
                     ^^^^^^^^^^^^^^^^
  File "/home/pi/.virtualenvs/pimoroni/lib/python3.11/site-packages/unicornhatmini/__init__.py", line 58, in __init__
    GPIO.setup(pin, GPIO.OUT, initial=GPIO.HIGH)
  File "/usr/lib/python3/dist-packages/RPi/GPIO/__init__.py", line 705, in setup
    _check(lgpio.gpio_claim_output(
           ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/lgpio.py", line 781, in gpio_claim_output
    return _u2i(_lgpio._gpio_claim_output(handle&0xffff, lFlags, gpio, level))
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/lgpio.py", line 458, in _u2i
    raise error(error_text(v))
lgpio.error: 'GPIO busy'

I managed to fix this by changing device.no_cs = False to device.no_cs = True and commenting out the manual GPIO commands on pins 7 and 8 for SPI0 CE1 and CE0 respectively.

Any reason why this was done manually rather than leaving it to the spidev library?