Mu: Issue with iPython REPL with Py3.8 Windows installer after using Py3.7 installer (venv pip install issue)

[carlosperate]

With the current master branch executable builds we have the Python 3 (3.7) REPL working correctly.

Moving the CI to build the installers with Python 3.8 and we encounter the Kernel died, restarting issue:

-----------------

Starting Mu 1.1.0.beta.1
2021-02-11 16:37:41,193 - root:173(run) INFO: uname_result(system='Windows', node='DESKTOP-V8VNTI4', release='10', version='10.0.19041', machine='AMD64', processor='Intel64 Family 6 Model 142 Stepping 10, GenuineIntel')
2021-02-11 16:37:41,193 - root:174(run) INFO: Python path: ['C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\python38.zip', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\DLLs', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\setuptools-49.6.0-py3.8.egg', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\pip-20.2.2-py3.8.egg', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\win32', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\win32\\lib', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\Pythonwin', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\IPython\\extensions']
2021-02-11 16:37:41,193 - root:175(run) INFO: Language code: en_GB
2021-02-11 16:37:41,193 - mu.settings:220(load) WARNING: No settings file found at C:\Users\microbit-carlos\AppData\Local\python\mu\settings.json; skipping
2021-02-11 16:37:41,263 - mu.virtual_environment:371(ensure) DEBUG: Found existing virtual environment at C:\Users\microbit-carlos\AppData\Local\python\mu\mu_venv
2021-02-11 16:37:41,263 - mu.virtual_environment:378(ensure_interpreter) INFO: Interpreter found at C:\Users\microbit-carlos\AppData\Local\python\mu\mu_venv\scripts\python.exe
2021-02-11 16:37:41,263 - mu.virtual_environment:388(ensure_pip) INFO: Pip found at C:\Users\microbit-carlos\AppData\Local\python\mu\mu_venv\scripts\pip.exe
2021-02-11 16:37:42,425 - mu.logic:758(__init__) INFO: Setting up editor.
2021-02-11 16:37:42,425 - mu.logic:778(__init__) INFO: Log directory: C:\Users\microbit-carlos\AppData\Local\python\mu\Logs
2021-02-11 16:37:42,425 - mu.logic:779(__init__) INFO: Data directory: C:\Users\microbit-carlos\AppData\Local\python\mu
2021-02-11 16:37:42,425 - mu.logic:793(setup) INFO: Available modes: python, circuitpython, microbit, esp, web, pyboard, debugger, pygamezero, lego, pico
2021-02-11 16:37:42,425 - mu.modes.base:61(get_default_workspace) INFO: Using workspace C:\Users\microbit-carlos\mu_code from settings file
2021-02-11 16:37:42,862 - mu.modes.base:61(get_default_workspace) INFO: Using workspace C:\Users\microbit-carlos\mu_code from settings file
2021-02-11 16:37:42,862 - mu.logic:1519(change_mode) INFO: Workspace directory: C:\Users\microbit-carlos\mu_code
2021-02-11 16:37:42,862 - mu.logic:867(restore_session) DEBUG: <SessionSettings from C:\Users\microbit-carlos\AppData\Local\python\mu\session.json>
2021-02-11 16:37:42,878 - mu.logic:889(restore_session) INFO: Loaded files.
2021-02-11 16:37:42,878 - mu.logic:892(restore_session) INFO: User defined environment variables: []
2021-02-11 16:37:42,878 - mu.logic:897(restore_session) INFO: Minify scripts on micro:bit? False
2021-02-11 16:37:42,931 - mu.modes.base:61(get_default_workspace) INFO: Using workspace C:\Users\microbit-carlos\mu_code from settings file
2021-02-11 16:37:42,931 - mu.logic:1519(change_mode) INFO: Workspace directory: C:\Users\microbit-carlos\mu_code
2021-02-11 16:37:43,269 - mu.logic:943(restore_session) INFO: Starting with blank file.
2021-02-11 16:37:44,452 - mu.modes.python3:280(toggle_repl) INFO: Toggle REPL on.
2021-02-11 16:37:44,452 - mu.modes.base:61(get_default_workspace) INFO: Using workspace C:\Users\microbit-carlos\mu_code from settings file
2021-02-11 16:37:44,452 - mu.modes.python3:78(__init__) DEBUG: About to create KernelRunner for mu_venv, C:\Users\microbit-carlos\mu_code, [] 
2021-02-11 16:37:44,452 - mu.modes.python3:94(start_kernel) DEBUG: About to start kernel
2021-02-11 16:37:44,452 - mu.modes.python3:95(start_kernel) INFO: ['C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\python38.zip', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\DLLs', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\setuptools-49.6.0-py3.8.egg', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\pip-20.2.2-py3.8.egg', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\win32', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\win32\\lib', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\Pythonwin', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\IPython\\extensions']
2021-02-11 16:37:44,452 - mu.modes.python3:99(start_kernel) INFO: Starting iPython kernel with user defined envars: {}
2021-02-11 16:37:44,577 - traitlets:56(start_kernel) DEBUG: Starting kernel: ['C:\\Users\\microbit-carlos\\AppData\\Local\\python\\mu\\mu_venv\\scripts\\python.exe', '-m', 'ipykernel_launcher', '-f', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Temp\\tmpzhbmrxg3.json']
2021-02-11 16:37:44,577 - traitlets:544(_create_connected_socket) DEBUG: Connecting to: tcp://127.0.0.1:63285
2021-02-11 16:37:44,592 - asyncio:623(__init__) DEBUG: Using proactor: IocpProactor
2021-02-11 16:37:44,592 - asyncio:623(__init__) DEBUG: Using proactor: IocpProactor
2021-02-11 16:37:44,592 - traitlets:149(shell_channel) DEBUG: connecting shell channel to tcp://127.0.0.1:63282
2021-02-11 16:37:44,592 - traitlets:544(_create_connected_socket) DEBUG: Connecting to: tcp://127.0.0.1:63282
2021-02-11 16:37:44,592 - traitlets:161(iopub_channel) DEBUG: connecting iopub channel to tcp://127.0.0.1:63283
2021-02-11 16:37:44,592 - traitlets:544(_create_connected_socket) DEBUG: Connecting to: tcp://127.0.0.1:63283
2021-02-11 16:37:44,592 - traitlets:173(stdin_channel) DEBUG: connecting stdin channel to tcp://127.0.0.1:63284
2021-02-11 16:37:44,592 - traitlets:544(_create_connected_socket) DEBUG: Connecting to: tcp://127.0.0.1:63284
2021-02-11 16:37:44,592 - traitlets:185(hb_channel) DEBUG: connecting heartbeat channel to tcp://127.0.0.1:63286
2021-02-11 16:37:44,592 - traitlets:196(control_channel) DEBUG: connecting control channel to tcp://127.0.0.1:63285
2021-02-11 16:37:44,592 - traitlets:544(_create_connected_socket) DEBUG: Connecting to: tcp://127.0.0.1:63285
2021-02-11 16:37:47,595 - traitlets:107(poll) INFO: KernelRestarter: restarting kernel (1/5), new random ports
2021-02-11 16:37:47,595 - traitlets:479(_handle_kernel_died) WARNING: kernel died: 3.002912759780884
2021-02-11 16:37:47,595 - traitlets:491(_handle_kernel_restarted) WARNING: kernel restarted
2021-02-11 16:37:47,610 - traitlets:56(start_kernel) DEBUG: Starting kernel: ['C:\\Users\\microbit-carlos\\AppData\\Local\\python\\mu\\mu_venv\\scripts\\python.exe', '-m', 'ipykernel_launcher', '-f', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Temp\\tmpzhbmrxg3.json']
2021-02-11 16:37:47,610 - traitlets:544(_create_connected_socket) DEBUG: Connecting to: tcp://127.0.0.1:63335
2021-02-11 16:37:50,595 - traitlets:479(_handle_kernel_died) WARNING: kernel died: 3.000040054321289
2021-02-11 16:37:50,612 - traitlets:107(poll) INFO: KernelRestarter: restarting kernel (2/5), new random ports
2021-02-11 16:37:50,612 - traitlets:491(_handle_kernel_restarted) WARNING: kernel restarted
2021-02-11 16:37:50,627 - traitlets:56(start_kernel) DEBUG: Starting kernel: ['C:\\Users\\microbit-carlos\\AppData\\Local\\python\\mu\\mu_venv\\scripts\\python.exe', '-m', 'ipykernel_launcher', '-f', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Temp\\tmpzhbmrxg3.json']
2021-02-11 16:37:50,627 - traitlets:544(_create_connected_socket) DEBUG: Connecting to: tcp://127.0.0.1:63352
2021-02-11 16:37:50,769 - mu.modes.python3:284(toggle_repl) INFO: Toggle REPL off.
2021-02-11 16:37:52,195 - mu.logic:1396(show_admin) INFO: Showing admin with logs from C:\Users\microbit-carlos\AppData\Local\python\mu\Logs\mu.log
2021-02-11 16:37:52,195 - mu.virtual_environment:503(installed_packages) INFO: Discovering installed third party modules in venv.
2021-02-11 16:37:52,195 - mu.virtual_environment:163(run) DEBUG: About to run blocking: C:\Users\microbit-carlos\AppData\Local\python\mu\mu_venv\scripts\pip.exe, ['list', '--disable-pip-version-check'], 30.0
2021-02-11 16:37:52,704 - mu.virtual_environment:523(installed_packages) INFO: []

@ntoll this explains why your builds had this issue, but the CI installers were working.

[carlosperate]

Okay, this is actually a problem installing the dependencies in the venv, as qtconsole is one of them:
https://github.com/mu-editor/mu/blob/26abb94b309a48aa550524de832010a07b09ace8/mu/wheels/__init__.py#L20

-----------------

Starting Mu 1.1.0.beta.1
2021-02-11 16:40:41,061 - root:173(run) INFO: uname_result(system='Windows', node='DESKTOP-V8VNTI4', release='10', version='10.0.19041', machine='AMD64', processor='Intel64 Family 6 Model 142 Stepping 10, GenuineIntel')
2021-02-11 16:40:41,061 - root:174(run) INFO: Python path: ['C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\python38.zip', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\DLLs', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\setuptools-49.6.0-py3.8.egg', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\pip-20.2.2-py3.8.egg', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\win32', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\win32\\lib', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\Pythonwin', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\IPython\\extensions']
2021-02-11 16:40:41,061 - root:175(run) INFO: Language code: en_GB
2021-02-11 16:40:41,061 - mu.settings:220(load) WARNING: No settings file found at C:\Users\microbit-carlos\AppData\Local\python\mu\settings.json; skipping
2021-02-11 16:40:41,108 - mu.virtual_environment:360(ensure) DEBUG: C:\Users\microbit-carlos\AppData\Local\python\mu\mu_venv does not exist; creating
2021-02-11 16:40:41,108 - mu.virtual_environment:400(create) INFO: Creating virtualenv: C:\Users\microbit-carlos\AppData\Local\python\mu\mu_venv
2021-02-11 16:40:41,108 - mu.virtual_environment:401(create) INFO: Virtualenv name: mu_venv
2021-02-11 16:40:45,373 - mu.virtual_environment:447(install_baseline_packages) INFO: Installing baseline packages
2021-02-11 16:40:45,373 - mu.virtual_environment:448(install_baseline_packages) INFO: C:\Users\microbit-carlos\AppData\Local\Programs\Mu Editor\Python\lib\site-packages\mu\wheels exists
2021-02-11 16:40:45,389 - mu.virtual_environment:193(install) DEBUG: About to pip install: ['C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\appdirs-1.4.4-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\backcall-0.2.0-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\black-20.8b1-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\click-7.1.2-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\colorama-0.4.4-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\decorator-4.4.2-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\Flask-1.1.2-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\ipykernel-5.4.3-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\ipython-7.19.0-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\ipython-7.20.0-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\ipython_genutils-0.2.0-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\itsdangerous-1.1.0-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\jedi-0.18.0-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\Jinja2-2.11.3-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\jupyter_client-6.1.11-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\jupyter_core-4.7.1-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\MarkupSafe-1.1.1-cp37-cp37m-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\MarkupSafe-1.1.1-cp38-cp38-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\mypy_extensions-0.4.3-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\nudatus-0.0.4-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\nudatus-0.0.5-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\numpy-1.20.0-cp37-cp37m-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\numpy-1.20.1-cp38-cp38-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\parso-0.8.1-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\pathspec-0.8.1-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\pgzero-1.2-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\pickleshare-0.7.5-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\prompt_toolkit-3.0.14-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\pygame-1.9.6-cp37-cp37m-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\pygame-2.0.1-cp38-cp38-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\Pygments-2.7.4-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\pyserial-3.4-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\python_dateutil-2.8.1-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\pywin32-300-cp37-cp37m-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\pywin32-300-cp38-cp38-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\pyzmq-22.0.2-cp37-cp37m-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\pyzmq-22.0.2-cp38-cp38-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\qtconsole-4.7.4-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\QtPy-1.9.0-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\regex-2020.11.13-cp37-cp37m-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\regex-2020.11.13-cp38-cp38-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\setuptools-52.0.0-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\setuptools-53.0.0-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\six-1.15.0-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\toml-0.10.2-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\tornado-6.1-cp37-cp37m-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\tornado-6.1-cp38-cp38-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\traitlets-5.0.5-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\typed_ast-1.4.2-cp37-cp37m-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\typed_ast-1.4.2-cp38-cp38-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\typing_extensions-3.7.4.3-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\wcwidth-0.2.5-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\Werkzeug-1.0.1-py2.py3-none-any.whl']
2021-02-11 16:40:45,389 - mu.virtual_environment:163(run) DEBUG: About to run blocking: C:\Users\microbit-carlos\AppData\Local\python\mu\mu_venv\scripts\pip.exe, ['install', '--disable-pip-version-check', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\appdirs-1.4.4-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\backcall-0.2.0-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\black-20.8b1-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\click-7.1.2-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\colorama-0.4.4-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\decorator-4.4.2-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\Flask-1.1.2-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\ipykernel-5.4.3-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\ipython-7.19.0-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\ipython-7.20.0-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\ipython_genutils-0.2.0-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\itsdangerous-1.1.0-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\jedi-0.18.0-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\Jinja2-2.11.3-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\jupyter_client-6.1.11-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\jupyter_core-4.7.1-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\MarkupSafe-1.1.1-cp37-cp37m-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\MarkupSafe-1.1.1-cp38-cp38-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\mypy_extensions-0.4.3-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\nudatus-0.0.4-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\nudatus-0.0.5-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\numpy-1.20.0-cp37-cp37m-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\numpy-1.20.1-cp38-cp38-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\parso-0.8.1-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\pathspec-0.8.1-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\pgzero-1.2-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\pickleshare-0.7.5-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\prompt_toolkit-3.0.14-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\pygame-1.9.6-cp37-cp37m-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\pygame-2.0.1-cp38-cp38-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\Pygments-2.7.4-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\pyserial-3.4-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\python_dateutil-2.8.1-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\pywin32-300-cp37-cp37m-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\pywin32-300-cp38-cp38-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\pyzmq-22.0.2-cp37-cp37m-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\pyzmq-22.0.2-cp38-cp38-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\qtconsole-4.7.4-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\QtPy-1.9.0-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\regex-2020.11.13-cp37-cp37m-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\regex-2020.11.13-cp38-cp38-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\setuptools-52.0.0-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\setuptools-53.0.0-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\six-1.15.0-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\toml-0.10.2-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\tornado-6.1-cp37-cp37m-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\tornado-6.1-cp38-cp38-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\traitlets-5.0.5-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\typed_ast-1.4.2-cp37-cp37m-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\typed_ast-1.4.2-cp38-cp38-win_amd64.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\typing_extensions-3.7.4.3-py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\wcwidth-0.2.5-py2.py3-none-any.whl', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\mu\\wheels\\Werkzeug-1.0.1-py2.py3-none-any.whl'], 180.0
2021-02-11 16:40:47,706 - mu.virtual_environment:472(install_baseline_packages) DEBUG: Processing c:\users\microbit-carlos\appdata\local\programs\mu editor\python\lib\site-packages\mu\wheels\appdirs-1.4.4-py2.py3-none-any.whl

Processing c:\users\microbit-carlos\appdata\local\programs\mu editor\python\lib\site-packages\mu\wheels\backcall-0.2.0-py2.py3-none-any.whl

Processing c:\users\microbit-carlos\appdata\local\programs\mu editor\python\lib\site-packages\mu\wheels\black-20.8b1-py3-none-any.whl

Processing c:\users\microbit-carlos\appdata\local\programs\mu editor\python\lib\site-packages\mu\wheels\click-7.1.2-py2.py3-none-any.whl

Processing c:\users\microbit-carlos\appdata\local\programs\mu editor\python\lib\site-packages\mu\wheels\colorama-0.4.4-py2.py3-none-any.whl

Processing c:\users\microbit-carlos\appdata\local\programs\mu editor\python\lib\site-packages\mu\wheels\decorator-4.4.2-py2.py3-none-any.whl

Processing c:\users\microbit-carlos\appdata\local\programs\mu editor\python\lib\site-packages\mu\wheels\flask-1.1.2-py2.py3-none-any.whl

Processing c:\users\microbit-carlos\appdata\local\programs\mu editor\python\lib\site-packages\mu\wheels\ipykernel-5.4.3-py3-none-any.whl

Processing c:\users\microbit-carlos\appdata\local\programs\mu editor\python\lib\site-packages\mu\wheels\ipython-7.19.0-py3-none-any.whl

Processing c:\users\microbit-carlos\appdata\local\programs\mu editor\python\lib\site-packages\mu\wheels\ipython-7.20.0-py3-none-any.whl

Processing c:\users\microbit-carlos\appdata\local\programs\mu editor\python\lib\site-packages\mu\wheels\ipython_genutils-0.2.0-py2.py3-none-any.whl

Processing c:\users\microbit-carlos\appdata\local\programs\mu editor\python\lib\site-packages\mu\wheels\itsdangerous-1.1.0-py2.py3-none-any.whl

Processing c:\users\microbit-carlos\appdata\local\programs\mu editor\python\lib\site-packages\mu\wheels\jedi-0.18.0-py2.py3-none-any.whl

Processing c:\users\microbit-carlos\appdata\local\programs\mu editor\python\lib\site-packages\mu\wheels\jinja2-2.11.3-py2.py3-none-any.whl

Processing c:\users\microbit-carlos\appdata\local\programs\mu editor\python\lib\site-packages\mu\wheels\jupyter_client-6.1.11-py3-none-any.whl

Processing c:\users\microbit-carlos\appdata\local\programs\mu editor\python\lib\site-packages\mu\wheels\jupyter_core-4.7.1-py3-none-any.whl

ERROR: MarkupSafe-1.1.1-cp37-cp37m-win_amd64.whl is not a supported wheel on this platform.


2021-02-11 16:40:47,706 - mu.virtual_environment:163(run) DEBUG: About to run blocking: C:\Users\microbit-carlos\AppData\Local\python\mu\mu_venv\scripts\pip.exe, ['list', '--disable-pip-version-check'], 30.0
2021-02-11 16:40:48,257 - mu.virtual_environment:423(install_jupyter_kernel) INFO: Installing Jupyter Kernel
2021-02-11 16:40:48,366 - mu.virtual_environment:378(ensure_interpreter) INFO: Interpreter found at C:\Users\microbit-carlos\AppData\Local\python\mu\mu_venv\scripts\python.exe
2021-02-11 16:40:48,366 - mu.virtual_environment:388(ensure_pip) INFO: Pip found at C:\Users\microbit-carlos\AppData\Local\python\mu\mu_venv\scripts\pip.exe
2021-02-11 16:40:49,472 - mu.logic:758(__init__) INFO: Setting up editor.
2021-02-11 16:40:49,472 - mu.logic:778(__init__) INFO: Log directory: C:\Users\microbit-carlos\AppData\Local\python\mu\Logs
2021-02-11 16:40:49,472 - mu.logic:779(__init__) INFO: Data directory: C:\Users\microbit-carlos\AppData\Local\python\mu
2021-02-11 16:40:49,472 - mu.logic:793(setup) INFO: Available modes: python, circuitpython, microbit, esp, web, pyboard, debugger, pygamezero, lego, pico
2021-02-11 16:40:49,472 - mu.modes.base:61(get_default_workspace) INFO: Using workspace C:\Users\microbit-carlos\mu_code from settings file
2021-02-11 16:40:49,740 - mu.modes.base:61(get_default_workspace) INFO: Using workspace C:\Users\microbit-carlos\mu_code from settings file
2021-02-11 16:40:49,740 - mu.logic:1519(change_mode) INFO: Workspace directory: C:\Users\microbit-carlos\mu_code
2021-02-11 16:40:49,740 - mu.logic:867(restore_session) DEBUG: <SessionSettings from C:\Users\microbit-carlos\AppData\Local\python\mu\session.json>
2021-02-11 16:40:49,740 - mu.logic:889(restore_session) INFO: Loaded files.
2021-02-11 16:40:49,740 - mu.logic:892(restore_session) INFO: User defined environment variables: []
2021-02-11 16:40:49,740 - mu.logic:897(restore_session) INFO: Minify scripts on micro:bit? False
2021-02-11 16:40:49,787 - mu.modes.base:61(get_default_workspace) INFO: Using workspace C:\Users\microbit-carlos\mu_code from settings file
2021-02-11 16:40:49,803 - mu.logic:1519(change_mode) INFO: Workspace directory: C:\Users\microbit-carlos\mu_code
2021-02-11 16:40:50,116 - mu.logic:943(restore_session) INFO: Starting with blank file.
2021-02-11 16:41:07,159 - mu.logic:1396(show_admin) INFO: Showing admin with logs from C:\Users\microbit-carlos\AppData\Local\python\mu\Logs\mu.log
2021-02-11 16:41:07,159 - mu.virtual_environment:503(installed_packages) INFO: Discovering installed third party modules in venv.
2021-02-11 16:41:07,159 - mu.virtual_environment:163(run) DEBUG: About to run blocking: C:\Users\microbit-carlos\AppData\Local\python\mu\mu_venv\scripts\pip.exe, ['list', '--disable-pip-version-check'], 30.0
2021-02-11 16:41:07,615 - mu.virtual_environment:523(installed_packages) INFO: []

Somehow MarkupSafe-1.1.1-cp37-cp37m-win_amd64.whl makes it into the wheels folder:

---

And the error stops the entire wheel installation process and nothing gets installed:

[tjguk]

Although I've not really looked into how the Jupyter Kernel stuff works, it seems v. likely that if we give the kernel a unique name (and, frankly, it could just be a GUID) when we install the venv then we won't see interference with any previous one. I'll have to check the code later to see how we know which Kernel to pick when we're running the REPL, but hopefully we can identify the one we've created.

[tjguk]

Ok; quickly noting for my sake -- the REPL is selected by the call to create the KernelRunner at https://github.com/mu-editor/mu/blob/master/mu/modes/python3.py#L300 where it uses the venv.name. So we could easily switch to the venv holding a specific kernel name and hopefully avoiding version ambiguity from there.

[tjguk]

Thinking a little further... if we go the route I propose in https://github.com/mu-editor/mu/issues/1291#issuecomment-778005178 then the venv itself will have a unique name and the kernel will inherit that by virtue of the code linked above. So this might become moot.

[carlosperate]

Sorry, I wrote all this yesterday and then forgot to click send 😅

Looks like the problem is related to the venv stuff in general rather than iPython in particular.
In my first report the issue was because somehow my mu_installation_path/site_packages/mu/wheels contained wheels for both Python 3.8 and 3.7 (in a 3.8 installation). I unsuccessfully tried to replicate it, and I still cannot figure out exactly how that happened.

Nevertheless having a venv for one Python version and then installing Mu with a different Python version also causes issues.

Below this line is the original message I didn't send yesterday.

---

Okay, so if I uninstall Mu Editor, delete the user data, and then install again the wheel is not present in the installation mu/wheels directory.

The new venv installs everything and all works fine.

---

If I then uninstall Mu Editor, but leave the Python 3.8 venv and install a version of Mu with Python 3.7 (this one), then I get errors launching the iPython REPL. But it's not the same problem where it tries to install the wrong wheel again.

-----------------

Starting Mu 1.1.0.beta.1
2021-02-11 22:08:56,829 - root:173(run) INFO: uname_result(system='Windows', node='DESKTOP-V8VNTI4', release='10', version='10.0.19041', machine='AMD64', processor='Intel64 Family 6 Model 142 Stepping 10, GenuineIntel')
2021-02-11 22:08:56,829 - root:174(run) INFO: Python path: ['C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\python37.zip', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\DLLs', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python', 'C:\\Users\\microbit-carlos\\AppData\\Roaming\\Python\\Python37\\site-packages', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\setuptools-49.6.0-py3.7.egg', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\pip-20.2.2-py3.7.egg', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\win32', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\win32\\lib', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\Pythonwin', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\IPython\\extensions']
2021-02-11 22:08:56,829 - root:175(run) INFO: Language code: en_GB
2021-02-11 22:08:56,829 - mu.settings:220(load) WARNING: No settings file found at C:\Users\microbit-carlos\AppData\Local\python\mu\settings.json; skipping
2021-02-11 22:08:57,111 - mu.virtual_environment:371(ensure) DEBUG: Found existing virtual environment at C:\Users\microbit-carlos\AppData\Local\python\mu\mu_venv
2021-02-11 22:08:57,111 - mu.virtual_environment:378(ensure_interpreter) INFO: Interpreter found at C:\Users\microbit-carlos\AppData\Local\python\mu\mu_venv\scripts\python.exe
2021-02-11 22:08:57,111 - mu.virtual_environment:388(ensure_pip) INFO: Pip found at C:\Users\microbit-carlos\AppData\Local\python\mu\mu_venv\scripts\pip.exe
2021-02-11 22:08:58,263 - mu.logic:758(__init__) INFO: Setting up editor.
2021-02-11 22:08:58,263 - mu.logic:778(__init__) INFO: Log directory: C:\Users\microbit-carlos\AppData\Local\python\mu\Logs
2021-02-11 22:08:58,263 - mu.logic:779(__init__) INFO: Data directory: C:\Users\microbit-carlos\AppData\Local\python\mu
2021-02-11 22:08:58,263 - mu.logic:793(setup) INFO: Available modes: python, circuitpython, microbit, esp, web, pyboard, debugger, pygamezero, lego, pico
2021-02-11 22:08:58,263 - mu.modes.base:63(get_default_workspace) INFO: Using workspace C:\Users\microbit-carlos\mu_code from settings file
2021-02-11 22:08:58,782 - mu.modes.base:63(get_default_workspace) INFO: Using workspace C:\Users\microbit-carlos\mu_code from settings file
2021-02-11 22:08:58,782 - mu.logic:1519(change_mode) INFO: Workspace directory: C:\Users\microbit-carlos\mu_code
2021-02-11 22:08:58,798 - mu.logic:867(restore_session) DEBUG: <SessionSettings from C:\Users\microbit-carlos\AppData\Local\python\mu\session.json>
2021-02-11 22:08:58,798 - mu.logic:889(restore_session) INFO: Loaded files.
2021-02-11 22:08:58,798 - mu.logic:893(restore_session) INFO: User defined environment variables: []
2021-02-11 22:08:58,798 - mu.logic:898(restore_session) INFO: Minify scripts on micro:bit? False
2021-02-11 22:08:58,860 - mu.modes.base:63(get_default_workspace) INFO: Using workspace C:\Users\microbit-carlos\mu_code from settings file
2021-02-11 22:08:58,860 - mu.logic:1519(change_mode) INFO: Workspace directory: C:\Users\microbit-carlos\mu_code
2021-02-11 22:08:59,251 - mu.logic:943(restore_session) INFO: Starting with blank file.
2021-02-11 22:09:01,460 - mu.modes.python3:280(toggle_repl) INFO: Toggle REPL on.
2021-02-11 22:09:01,460 - mu.modes.base:63(get_default_workspace) INFO: Using workspace C:\Users\microbit-carlos\mu_code from settings file
2021-02-11 22:09:01,460 - mu.modes.python3:82(__init__) DEBUG: About to create KernelRunner for mu_venv, C:\Users\microbit-carlos\mu_code, [] 
2021-02-11 22:09:01,460 - mu.modes.python3:94(start_kernel) DEBUG: About to start kernel
2021-02-11 22:09:01,460 - mu.modes.python3:95(start_kernel) INFO: ['C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\python37.zip', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\DLLs', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python', 'C:\\Users\\microbit-carlos\\AppData\\Roaming\\Python\\Python37\\site-packages', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\setuptools-49.6.0-py3.7.egg', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\pip-20.2.2-py3.7.egg', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\win32', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\win32\\lib', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\Pythonwin', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\IPython\\extensions']
2021-02-11 22:09:01,460 - mu.modes.python3:101(start_kernel) INFO: Starting iPython kernel with user defined envars: {}
2021-02-11 22:09:01,976 - traitlets:56(start_kernel) DEBUG: Starting kernel: ['C:\\Users\\microbit-carlos\\AppData\\Local\\python\\mu\\mu_venv\\scripts\\python.exe', '-m', 'ipykernel_launcher', '-f', 'C:\\Users\\MICROB~1\\AppData\\Local\\Temp\\tmps9wht2w9.json']
2021-02-11 22:09:02,038 - traitlets:544(_create_connected_socket) DEBUG: Connecting to: tcp://127.0.0.1:50123
2021-02-11 22:09:02,054 - asyncio:58(__init__) DEBUG: Using selector: SelectSelector
2021-02-11 22:09:02,054 - asyncio:58(__init__) DEBUG: Using selector: SelectSelector
2021-02-11 22:09:02,054 - traitlets:149(shell_channel) DEBUG: connecting shell channel to tcp://127.0.0.1:50120
2021-02-11 22:09:02,054 - traitlets:544(_create_connected_socket) DEBUG: Connecting to: tcp://127.0.0.1:50120
2021-02-11 22:09:02,070 - traitlets:161(iopub_channel) DEBUG: connecting iopub channel to tcp://127.0.0.1:50121
2021-02-11 22:09:02,070 - traitlets:544(_create_connected_socket) DEBUG: Connecting to: tcp://127.0.0.1:50121
2021-02-11 22:09:02,070 - traitlets:173(stdin_channel) DEBUG: connecting stdin channel to tcp://127.0.0.1:50122
2021-02-11 22:09:02,070 - traitlets:544(_create_connected_socket) DEBUG: Connecting to: tcp://127.0.0.1:50122
2021-02-11 22:09:02,070 - traitlets:185(hb_channel) DEBUG: connecting heartbeat channel to tcp://127.0.0.1:50124
2021-02-11 22:09:02,070 - traitlets:196(control_channel) DEBUG: connecting control channel to tcp://127.0.0.1:50123
2021-02-11 22:09:02,070 - traitlets:544(_create_connected_socket) DEBUG: Connecting to: tcp://127.0.0.1:50123
2021-02-11 22:09:05,071 - traitlets:479(_handle_kernel_died) WARNING: kernel died: 3.001821517944336
2021-02-11 22:09:06,604 - mu.modes.python3:284(toggle_repl) INFO: Toggle REPL off.
2021-02-11 22:09:17,489 - mu.logic:1396(show_admin) INFO: Showing admin with logs from C:\Users\microbit-carlos\AppData\Local\python\mu\Logs\mu.log
2021-02-11 22:09:17,489 - mu.virtual_environment:503(installed_packages) INFO: Discovering installed third party modules in venv.
2021-02-11 22:09:17,489 - mu.virtual_environment:167(run) DEBUG: About to run blocking: C:\Users\microbit-carlos\AppData\Local\python\mu\mu_venv\scripts\pip.exe, ['list', '--disable-pip-version-check'], 30.0
2021-02-11 22:09:20,552 - mu.virtual_environment:523(installed_packages) INFO: []

---

If I then uninstall and remove user data again, and install the same Mu with Python 3.7, it all works fine.

---

Keep an 3.7 venv, uninstall 3.7 Mu and then installing a 3.8 Mu causes a similar issue as the other way around.

-----------------

Starting Mu 1.1.0.beta.1
2021-02-11 22:23:53,607 - root:173(run) INFO: uname_result(system='Windows', node='DESKTOP-V8VNTI4', release='10', version='10.0.19041', machine='AMD64', processor='Intel64 Family 6 Model 142 Stepping 10, GenuineIntel')
2021-02-11 22:23:53,607 - root:174(run) INFO: Python path: ['C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\python38.zip', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\DLLs', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\setuptools-49.6.0-py3.8.egg', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\pip-20.2.2-py3.8.egg', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\win32', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\win32\\lib', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\Pythonwin', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\IPython\\extensions']
2021-02-11 22:23:53,607 - root:175(run) INFO: Language code: en_GB
2021-02-11 22:23:53,607 - mu.settings:220(load) WARNING: No settings file found at C:\Users\microbit-carlos\AppData\Local\python\mu\settings.json; skipping
2021-02-11 22:23:53,904 - mu.virtual_environment:371(ensure) DEBUG: Found existing virtual environment at C:\Users\microbit-carlos\AppData\Local\python\mu\mu_venv
2021-02-11 22:23:53,904 - mu.virtual_environment:378(ensure_interpreter) INFO: Interpreter found at C:\Users\microbit-carlos\AppData\Local\python\mu\mu_venv\scripts\python.exe
2021-02-11 22:23:53,904 - mu.virtual_environment:388(ensure_pip) INFO: Pip found at C:\Users\microbit-carlos\AppData\Local\python\mu\mu_venv\scripts\pip.exe
2021-02-11 22:23:55,002 - mu.logic:758(__init__) INFO: Setting up editor.
2021-02-11 22:23:55,002 - mu.logic:778(__init__) INFO: Log directory: C:\Users\microbit-carlos\AppData\Local\python\mu\Logs
2021-02-11 22:23:55,002 - mu.logic:779(__init__) INFO: Data directory: C:\Users\microbit-carlos\AppData\Local\python\mu
2021-02-11 22:23:55,002 - mu.logic:793(setup) INFO: Available modes: python, circuitpython, microbit, esp, web, pyboard, debugger, pygamezero, lego, pico
2021-02-11 22:23:55,002 - mu.modes.base:61(get_default_workspace) INFO: Using workspace C:\Users\microbit-carlos\mu_code from settings file
2021-02-11 22:23:55,398 - mu.modes.base:61(get_default_workspace) INFO: Using workspace C:\Users\microbit-carlos\mu_code from settings file
2021-02-11 22:23:55,398 - mu.logic:1519(change_mode) INFO: Workspace directory: C:\Users\microbit-carlos\mu_code
2021-02-11 22:23:55,398 - mu.logic:867(restore_session) DEBUG: <SessionSettings from C:\Users\microbit-carlos\AppData\Local\python\mu\session.json>
2021-02-11 22:23:55,413 - mu.logic:889(restore_session) INFO: Loaded files.
2021-02-11 22:23:55,413 - mu.logic:892(restore_session) INFO: User defined environment variables: []
2021-02-11 22:23:55,413 - mu.logic:897(restore_session) INFO: Minify scripts on micro:bit? False
2021-02-11 22:23:55,476 - mu.modes.base:61(get_default_workspace) INFO: Using workspace C:\Users\microbit-carlos\mu_code from settings file
2021-02-11 22:23:55,476 - mu.logic:1519(change_mode) INFO: Workspace directory: C:\Users\microbit-carlos\mu_code
2021-02-11 22:23:55,853 - mu.logic:943(restore_session) INFO: Starting with blank file.
2021-02-11 22:23:58,460 - mu.logic:1396(show_admin) INFO: Showing admin with logs from C:\Users\microbit-carlos\AppData\Local\python\mu\Logs\mu.log
2021-02-11 22:23:58,460 - mu.virtual_environment:503(installed_packages) INFO: Discovering installed third party modules in venv.
2021-02-11 22:23:58,460 - mu.virtual_environment:163(run) DEBUG: About to run blocking: C:\Users\microbit-carlos\AppData\Local\python\mu\mu_venv\scripts\pip.exe, ['list', '--disable-pip-version-check'], 30.0
2021-02-11 22:24:00,504 - mu.virtual_environment:523(installed_packages) INFO: ['File', 'ImportError:']
2021-02-11 22:24:22,131 - mu.logic:1449(sync_package_state) INFO: Synchronize package states...
2021-02-11 22:24:22,131 - mu.logic:1450(sync_package_state) INFO: Old: {'importerror:', 'file'}
2021-02-11 22:24:22,131 - mu.logic:1451(sync_package_state) INFO: New: {'importerror:', 'file'}
2021-02-11 22:24:24,268 - mu.modes.python3:280(toggle_repl) INFO: Toggle REPL on.
2021-02-11 22:24:24,268 - mu.modes.base:61(get_default_workspace) INFO: Using workspace C:\Users\microbit-carlos\mu_code from settings file
2021-02-11 22:24:24,268 - mu.modes.python3:78(__init__) DEBUG: About to create KernelRunner for mu_venv, C:\Users\microbit-carlos\mu_code, [] 
2021-02-11 22:24:24,268 - mu.modes.python3:94(start_kernel) DEBUG: About to start kernel
2021-02-11 22:24:24,268 - mu.modes.python3:95(start_kernel) INFO: ['C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\python38.zip', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\DLLs', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\setuptools-49.6.0-py3.8.egg', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\pip-20.2.2-py3.8.egg', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\win32', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\win32\\lib', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\Pythonwin', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Programs\\Mu Editor\\Python\\lib\\site-packages\\IPython\\extensions']
2021-02-11 22:24:24,268 - mu.modes.python3:99(start_kernel) INFO: Starting iPython kernel with user defined envars: {}
2021-02-11 22:24:24,750 - traitlets:56(start_kernel) DEBUG: Starting kernel: ['C:\\Users\\microbit-carlos\\AppData\\Local\\python\\mu\\mu_venv\\scripts\\python.exe', '-m', 'ipykernel_launcher', '-f', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Temp\\tmpjnj9ssm4.json']
2021-02-11 22:24:24,781 - traitlets:544(_create_connected_socket) DEBUG: Connecting to: tcp://127.0.0.1:50302
2021-02-11 22:24:24,820 - asyncio:623(__init__) DEBUG: Using proactor: IocpProactor
2021-02-11 22:24:24,820 - asyncio:623(__init__) DEBUG: Using proactor: IocpProactor
2021-02-11 22:24:24,820 - traitlets:149(shell_channel) DEBUG: connecting shell channel to tcp://127.0.0.1:50299
2021-02-11 22:24:24,820 - traitlets:544(_create_connected_socket) DEBUG: Connecting to: tcp://127.0.0.1:50299
2021-02-11 22:24:24,828 - traitlets:161(iopub_channel) DEBUG: connecting iopub channel to tcp://127.0.0.1:50300
2021-02-11 22:24:24,828 - traitlets:544(_create_connected_socket) DEBUG: Connecting to: tcp://127.0.0.1:50300
2021-02-11 22:24:24,828 - traitlets:173(stdin_channel) DEBUG: connecting stdin channel to tcp://127.0.0.1:50301
2021-02-11 22:24:24,828 - traitlets:544(_create_connected_socket) DEBUG: Connecting to: tcp://127.0.0.1:50301
2021-02-11 22:24:24,828 - traitlets:185(hb_channel) DEBUG: connecting heartbeat channel to tcp://127.0.0.1:50303
2021-02-11 22:24:24,828 - traitlets:196(control_channel) DEBUG: connecting control channel to tcp://127.0.0.1:50302
2021-02-11 22:24:24,828 - traitlets:544(_create_connected_socket) DEBUG: Connecting to: tcp://127.0.0.1:50302
2021-02-11 22:24:27,817 - traitlets:107(poll) INFO: KernelRestarter: restarting kernel (1/5), new random ports
2021-02-11 22:24:27,817 - traitlets:491(_handle_kernel_restarted) WARNING: kernel restarted
2021-02-11 22:24:27,817 - traitlets:56(start_kernel) DEBUG: Starting kernel: ['C:\\Users\\microbit-carlos\\AppData\\Local\\python\\mu\\mu_venv\\scripts\\python.exe', '-m', 'ipykernel_launcher', '-f', 'C:\\Users\\microbit-carlos\\AppData\\Local\\Temp\\tmpjnj9ssm4.json']
2021-02-11 22:24:27,817 - traitlets:544(_create_connected_socket) DEBUG: Connecting to: tcp://127.0.0.1:50350
2021-02-11 22:24:27,833 - traitlets:479(_handle_kernel_died) WARNING: kernel died: 3.004534959793091
2021-02-11 22:24:29,811 - mu.modes.python3:284(toggle_repl) INFO: Toggle REPL off.
2021-02-11 22:24:53,527 - mu.logic:1396(show_admin) INFO: Showing admin with logs from C:\Users\microbit-carlos\AppData\Local\python\mu\Logs\mu.log
2021-02-11 22:24:53,527 - mu.virtual_environment:503(installed_packages) INFO: Discovering installed third party modules in venv.
2021-02-11 22:24:53,527 - mu.virtual_environment:163(run) DEBUG: About to run blocking: C:\Users\microbit-carlos\AppData\Local\python\mu\mu_venv\scripts\pip.exe, ['list', '--disable-pip-version-check'], 30.0
2021-02-11 22:24:55,106 - mu.virtual_environment:523(installed_packages) INFO: ['File', 'ImportError:']

---

I still don't know how I got the original issue, as the installed Mu Editor (Py3.8) site-packages/mu/wheels/ directory had wheels for both Python 3.7 and 3.8.

[tjguk]

I had already thought of adding a "clear-out" at the start of the mu.wheels download run as I'd been bitten by a variant of this problem.

[tjguk]

Just merged #1294 which clears any existing wheels before downloading. Should prevent "rogue" wheels making their way into the installer

[carlosperate]

Great, thanks Tim!
The other issue mentioned here (venvs from a different python version) should be covered by the changes listed in https://github.com/mu-editor/mu/issues/1291.

I'll close this ticket as that work is already captured over there.

[ntoll]

"Rogue Wheels" - sounds like a new StarWars movie. :-)