Support pyenv-win on Windows

[empz]

Currently, the Python extension seems to rely on the py launcher installed by the official windows installers.

I'm using pyenv-win to manage different python versions on my Windows machine and I wasn't able to make VS Code detect it, even though running python on my terminal worked perfectly. I've even tried setting explicitly the python.defaultInterpreterPath setting but that didn't work either.

So, apart from the feature request. Is there a way to use the Python extension without having the py launcher available on C:\Windows

[karthiknadig]

Thank you for the suggestion! We have marked this issue as "needs decision" to make sure we have a conversation about your idea. We plan to leave this feature request open for at least a month to see how many 👍 votes the opening comment gets to help us make our decision.

[vgibilmanno]

I'd love to have this feature too. Meanwhile I created a separate extension for pyenv-win to have a quick working solution for me. But would be awesome to see this feature work in this package of course. https://github.com/vgibilmanno/vscode-winpyenv

[karthiknadig]

@vgibilmanno We have a experimental discovery component that supports this. Add this to your user settings to try it out:

    "python.experiments.optInto": [
        "pythonDiscoveryModule"
    ], 

And reload VS Code.

[karthiknadig]

[luabud]

@empz do you mind checking if Karthik's solution solves the issue for you? thanks!

[vgibilmanno]

@karthiknadig I tried your solution but it doesn't work for me. In case it matters, I'm using the following version of the extension: v2021.3.680753044

[karthiknadig]

@vgibilmanno Can you share the contents of Output > Python panel? If you are in the experiment it should show that you are part of that experiment group. We look for pyenv-win in %USERPROFILE%/.pyenv/pyenv-win can you confirm that pyenv-win is installed there?

[vgibilmanno]

@karthiknadig This is the output:

User belongs to experiment group 'pythonDiscoveryModule'
User belongs to experiment group 'pythonaacf'
User belongs to experiment group 'pythonJoinMailingListVar2'
User belongs to experiment group 'pythonSendEntireLineToREPL'
User belongs to experiment group 'pythonNotDisplayLinterPrompt'
User belongs to experiment group 'ShowExtensionSurveyPrompt - control'
User belongs to experiment group 'CollectLSRequestTiming - control'
Python interpreter path: ~\AppData\Local\Programs\Python\Python36\python.exe
Starting Jedi Python language engine.
> ~\AppData\Local\Programs\Python\Python36\python.exe c:\Users\vgibilmanno\.vscode\extensions\ms-python.python-2021.3.680753044\pythonFiles\pyvsc-run-isolated.py -c "import sys;print(sys.prefix)"
cwd: c:\Users\vgibilmanno\Desktop\temp\art
> ~\AppData\Local\Programs\Python\Python36\python.exe c:\Users\vgibilmanno\.vscode\extensions\ms-python.python-2021.3.680753044\pythonFiles\pyvsc-run-isolated.py -c "import sys;print(sys.prefix)"
cwd: c:\Users\vgibilmanno\Desktop\temp\art
> ~\AppData\Local\Programs\Python\Python36\python.exe c:\Users\vgibilmanno\.vscode\extensions\ms-python.python-2021.3.680753044\pythonFiles\pyvsc-run-isolated.py -c "import sys;print(sys.executable)"
cwd: c:\Users\vgibilmanno\Desktop\temp\art
> ~\AppData\Local\Programs\Python\Python36\python.exe c:\Users\vgibilmanno\.vscode\extensions\ms-python.python-2021.3.680753044\pythonFiles\pyvsc-run-isolated.py -c "import sys;print(sys.executable)"
cwd: c:\Users\vgibilmanno\Desktop\temp\art
> ~\AppData\Local\Programs\Python\Python36\python.exe c:\Users\vgibilmanno\.vscode\extensions\ms-python.python-2021.3.680753044\pythonFiles\pyvsc-run-isolated.py site --user-site
cwd: c:\Users\vgibilmanno\Desktop\temp\art
> ~\AppData\Local\Programs\Python\Python36\python.exe c:\Users\vgibilmanno\.vscode\extensions\ms-python.python-2021.3.680753044\pythonFiles\pyvsc-run-isolated.py site --user-site
cwd: c:\Users\vgibilmanno\Desktop\temp\art
> ~\AppData\Local\Programs\Python\Python36\python.exe c:\Users\vgibilmanno\.vscode\extensions\ms-python.python-2021.3.680753044\pythonFiles\pyvsc-run-isolated.py -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())"
cwd: c:\Users\vgibilmanno\Desktop\temp\art
> ~\AppData\Local\Programs\Python\Python36\python.exe c:\Users\vgibilmanno\.vscode\extensions\ms-python.python-2021.3.680753044\pythonFiles\pyvsc-run-isolated.py -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())"
cwd: c:\Users\vgibilmanno\Desktop\temp\art
> ~\AppData\Local\Programs\Python\Python36\python.exe c:\Users\vgibilmanno\.vscode\extensions\ms-python.python-2021.3.680753044\pythonFiles\pyvsc-run-isolated.py pylint --disable=all --enable=F,unreachable,duplicate-key,unnecessary-semicolon,global-variable-not-assigned,unused-variable,unused-wildcard-import,binary-op-exception,bad-format-string,anomalous-backslash-in-string,bad-open-mode,E0001,E0011,E0012,E0100,E0101,E0102,E0103,E0104,E0105,E0107,E0108,E0110,E0111,E0112,E0113,E0114,E0115,E0116,E0117,E0118,E0202,E0203,E0211,E0213,E0236,E0237,E0238,E0239,E0240,E0241,E0301,E0302,E0303,E0401,E0402,E0601,E0602,E0603,E0604,E0611,E0632,E0633,E0701,E0702,E0703,E0704,E0710,E0711,E0712,E1003,E1101,E1102,E1111,E1120,E1121,E1123,E1124,E1125,E1126,E1127,E1128,E1129,E1130,E1131,E1132,E1133,E1134,E1135,E1136,E1137,E1138,E1139,E1200,E1201,E1205,E1206,E1300,E1301,E1302,E1303,E1304,E1305,E1306,E1310,E1700,E1701 --msg-template='{line},{column},{category},{symbol}:{msg}' --reports=n --output-format=text c:\Users\vgibilmanno\Desktop\temp\art\art.py
cwd: c:\Users\vgibilmanno\Desktop\temp\art
> ~\AppData\Local\Programs\Python\Python36\python.exe c:\Users\vgibilmanno\.vscode\extensions\ms-python.python-2021.3.680753044\pythonFiles\pyvsc-run-isolated.py pylint --disable=all --enable=F,unreachable,duplicate-key,unnecessary-semicolon,global-variable-not-assigned,unused-variable,unused-wildcard-import,binary-op-exception,bad-format-string,anomalous-backslash-in-string,bad-open-mode,E0001,E0011,E0012,E0100,E0101,E0102,E0103,E0104,E0105,E0107,E0108,E0110,E0111,E0112,E0113,E0114,E0115,E0116,E0117,E0118,E0202,E0203,E0211,E0213,E0236,E0237,E0238,E0239,E0240,E0241,E0301,E0302,E0303,E0401,E0402,E0601,E0602,E0603,E0604,E0611,E0632,E0633,E0701,E0702,E0703,E0704,E0710,E0711,E0712,E1003,E1101,E1102,E1111,E1120,E1121,E1123,E1124,E1125,E1126,E1127,E1128,E1129,E1130,E1131,E1132,E1133,E1134,E1135,E1136,E1137,E1138,E1139,E1200,E1201,E1205,E1206,E1300,E1301,E1302,E1303,E1304,E1305,E1306,E1310,E1700,E1701 --msg-template='{line},{column},{category},{symbol}:{msg}' --reports=n --output-format=text c:\Users\vgibilmanno\Desktop\temp\art\art.py
cwd: c:\Users\vgibilmanno\Desktop\temp\art
> ~\AppData\Local\Programs\Python\Python36\python.exe c:\Users\vgibilmanno\.vscode\extensions\ms-python.python-2021.3.680753044\pythonFiles\pyvsc-run-isolated.py c:\Users\vgibilmanno\.vscode\extensions\ms-python.python-2021.3.680753044\pythonFiles\completion.py
> ~\AppData\Local\Programs\Python\Python36\python.exe c:\Users\vgibilmanno\.vscode\extensions\ms-python.python-2021.3.680753044\pythonFiles\pyvsc-run-isolated.py c:\Users\vgibilmanno\.vscode\extensions\ms-python.python-2021.3.680753044\pythonFiles\completion.py
> ~\AppData\Local\Programs\Python\Python36\python.exe c:\Users\vgibilmanno\.vscode\extensions\ms-python.python-2021.3.680753044\pythonFiles\pyvsc-run-isolated.py -c "import pylint"
> ~\AppData\Local\Programs\Python\Python36\python.exe c:\Users\vgibilmanno\.vscode\extensions\ms-python.python-2021.3.680753044\pythonFiles\pyvsc-run-isolated.py -c "import pylint"
> ~\AppData\Local\Programs\Python\Python36\python.exe c:\Users\vgibilmanno\.vscode\extensions\ms-python.python-2021.3.680753044\pythonFiles\pyvsc-run-isolated.py -c "import pylint"
> ~\AppData\Local\Programs\Python\Python36\python.exe c:\Users\vgibilmanno\.vscode\extensions\ms-python.python-2021.3.680753044\pythonFiles\pyvsc-run-isolated.py -c "import pylint"

Linter 'pylint' is not installed. Please install it or select another linter".
Error: Module 'pylint' not installed.
> conda --version

I can confirm, that pyenv-win is installed there

[karthiknadig]

@vgibilmanno Can you check if you have any of the following environment variables set?

• PYENV
• PYENV_ROOT

If so what is their value?

[vgibilmanno]

PYENV: %USERPROFILE%.pyenv\pyenv-win\

PYENV_ROOT was not set. I manually set it to %USERPROFILE%.pyenv\pyenv-win\bin and restarted VS Code but it still doesn't detect pyenv.

[karthiknadig]

Can you try and set it like this:

if %USERPROFILE% does not end with a \ then the path will be wrong. In my case it does not end with a \

[vgibilmanno]

It worked. Though I don't know if setting the PYENV_HOME environment variable fixed it or because removing \ at the end. I tried deleting the PYENV_HOME and setting the \ to the PYENV variable again, but now VS Code always finds the pyenv interpreters (probably caches found locations?)

[karthiknadig]

@vgibilmanno We do some cashing. Can you share the value of USERPROFILE, and PYENV that you have? On windows we look at PYENV only. I think USERPROFILE did not terminate with a separator. So %USERPROFILE%.pyenv\pyenv-win\ was expanding to something like C:\Users\username.pyenv\pyenv-win\. Probably resetting it with absolute path ensured there was a separator after the user name.

[vgibilmanno]

That's my current value. It's the same it was when pyenv was detected by the extension

EDIT: I just tried and it's definitely because of the additional \ at the end of the path. Though the \ is there by default when installing pyenv-win

[karthiknadig]

Closing this since the feature itself is now available under the pythondiscoverymodule experiment.