`edgetpu_demo` fails on `tflite` version conflict about google-coral HOT 8 OPEN

...
pkg_resources.ContextualVersionConflict: (tflite-runtime 2.1.0.post1 (/usr/local/lib/python3.7/dist-packages), Requirement.parse('tflite-runtime==2.5.0.post1'), {'pycoral'})
...

**/usr/bin/edgetpu_demo

#!/bin/bash

readonly TEST_DATA="/usr/share/edgetpudemo"
readonly VIDEO_DEVICE_FILE="${TEST_DATA}/video_device.mp4"
readonly VIDEO_STREAM_FILE="${TEST_DATA}/video_stream.mp4"
readonly TPU_MODEL_FILE="${TEST_DATA}/mobilenet_ssd_v1_coco_quant_postprocess_edgetpu.tflite@Running MobileNet SSD v1 on Edge TPU"
readonly CPU_MODEL_FILE="${TEST_DATA}/mobilenet_ssd_v1_coco_quant_postprocess.tflite@Running MobileNet SSD v1 on CPU"
readonly LABELS_FILE="${TEST_DATA}/coco_labels.txt"

if [[ "$1" == "--device" ]]; then
  echo "Press 'q' to quit."
  echo "Press 'n' to switch between models."

  edgetpu_detect \
      --source "${VIDEO_DEVICE_FILE}" \
      --model "${TPU_MODEL_FILE},${CPU_MODEL_FILE}" \
      --labels "${LABELS_FILE}" \
      --filter car,truck \
      --max_area 0.1 \
      --color white \
      --loop \
      --displaymode fullscreen
elif [[ "$1" == "--stream" ]]; then
  echo "Press 'q' to quit."
  echo "Press 'n' to switch between models."

  SERVER_INDEX_HTML="${TEST_DATA}/index.html" edgetpu_detect_server \
      --source "${VIDEO_STREAM_FILE}" \
      --model "${TPU_MODEL_FILE},${CPU_MODEL_FILE}" \
      --labels "${LABELS_FILE}" \
      --filter car,truck \
      --max_area 0.1 \
      --color white \
      --loop
else
  echo "Run on-device inference:"
  echo "  $0 --device"
  echo "Run streaming server:"
  echo "  $0 --stream"
fi

sachlj@google-coral:~$ edgetpu_demo --stream
Press 'q' to quit.
Press 'n' to switch between models.
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 583, in _build_master
    ws.require(__requires__)
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 900, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 791, in resolve
    raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (tflite-runtime 2.1.0.post1 (/usr/local/lib/python3.7/dist-packages), Requirement.parse('tflite-runtime==2.5.0.post1'), {'pycoral'})

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/bin/edgetpu_detect_server", line 6, in <module>
    from pkg_resources import load_entry_point
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 3191, in <module>
    @_call_aside
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 3175, in _call_aside
    f(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 3204, in _initialize_master_working_set
    working_set = WorkingSet._build_master()
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 585, in _build_master
    return cls._build_from_requirements(__requires__)
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 598, in _build_from_requirements
    dists = ws.resolve(reqs, Environment())
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 786, in resolve
    raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'tflite-runtime==2.5.0.post1' distribution was not found and is required by pycoral

sachlj@google-coral:~$

sachlj@google-coral:~$ cd coral
sachlj@google-coral:~/coral$ cd pycoral
sachlj@google-coral:~/coral/pycoral$ bash examples/install_requirements.sh classify_image.py
DOWNLOAD: mobilenet_v2_1.0_224_inat_bird_quant_edgetpu.tflite
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
100 4197k  100 4197k    0     0  12.1M      0 --:--:-- --:--:-- --:--:-- 12.1M
DOWNLOAD: mobilenet_v2_1.0_224_inat_bird_quant.tflite
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
100 3495k  100 3495k    0     0  10.4M      0 --:--:-- --:--:-- --:--:-- 10.4M
DOWNLOAD: inat_bird_labels.txt
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
100 37146  100 37146    0     0   152k      0 --:--:-- --:--:-- --:--:--  152k
DOWNLOAD: parrot.jpg
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
100  582k  100  582k    0     0  2268k      0 --:--:-- --:--:-- --:--:-- 2268k

sachlj@google-coral:~/coral/pycoral$ python3 examples/classify_image.py \
> --model test_data/mobilenet_v2_1.0_224_inat_bird_quant_edgetpu.tflite \
> --labels test_data/inat_bird_labels.txt \
> --input test_data/parrot.jpg
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/dist-packages/tflite_runtime/interpreter.py", line 161, in load_delegate
    delegate = Delegate(library, options)
  File "/usr/local/lib/python3.7/dist-packages/tflite_runtime/interpreter.py", line 120, in __init__
    raise ValueError(capture.message)
ValueError

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "examples/classify_image.py", line 121, in <module>
    main()
  File "examples/classify_image.py", line 71, in main
    interpreter = make_interpreter(*args.model.split('@'))
  File "/usr/lib/python3/dist-packages/pycoral/utils/edgetpu.py", line 87, in make_interpreter
    delegates = [load_edgetpu_delegate({'device': device} if device else {})]
  File "/usr/lib/python3/dist-packages/pycoral/utils/edgetpu.py", line 52, in load_edgetpu_delegate
    return tflite.load_delegate(_EDGETPU_SHARED_LIB, options or {})
  File "/usr/local/lib/python3.7/dist-packages/tflite_runtime/interpreter.py", line 164, in load_delegate
    library, str(e)))
ValueError: Failed to load delegate from libedgetpu.so.1

sachlj@google-coral:~/coral/pycoral$