pytest discovery broken - no pip installer

[Josverl]

Type: Bug

Test discovery in existing project stopped working

• rebuilt .venv
• removed caches
  Similar to :
• "No pip installer available" when configuring test #22635
• Cannot discover tests anymore, python executable not used #22618
  python -c "import pip" in a teeminal with activated .venv works fine

Extension version: 2023.22.0
VS Code version: Code 1.85.0 (af28b32d7e553898b2a91af498b1fb666fdebe0c, 2023-12-06T20:48:09.019Z)
OS version: Windows_NT x64 10.0.22631
Modes:

System Info

Item	Value
CPUs	11th Gen Intel(R) Core(TM) i7-11370H @ 3.30GHz (8 x 3302)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: enabled_on direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok video_decode: enabled video_encode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: enabled
Load (avg)	undefined
Memory (System)	31.84GB (6.73GB free)
Process Argv	. --crash-reporter-id fc4aff2e-75bc-4485-b49b-a6ef380bc8c6
Screen Reader	no
VM	0%

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[Josverl]

Using the preview version v2023.23.13391009 the Output.Python log shows :

2023-12-12 23:24:22.657 [info] > ./.venv/Scripts/activate.bat && echo 'e8b39361-0157-4923-80e1-22d70d46dee6' && python ~/.vscode/extensions/ms-python.python-2023.23.13391009/pythonFiles/printEnvVariables.py
2023-12-12 23:24:22.657 [info] shell: commandPrompt
2023-12-12 23:24:22.823 [info] > .\.venv -m pytest -p vscode_pytest --collect-only .
2023-12-12 23:24:22.823 [info] cwd: .
2023-12-12 23:24:29.440 [info] Discover tests for workspace name: micropython-stubber - uri: c:\develop\MyPython\micropython-stubber
2023-12-12 23:24:29.440 [info] Running discovery for pytest using the new test adapter.
2023-12-12 23:24:33.788 [info] Discover tests for workspace name: micropython-stubber - uri: c:\develop\MyPython\micropython-stubber
2023-12-12 23:24:33.788 [info] Running discovery for pytest using the new test adapter.
2023-12-12 23:24:37.293 [info] > ./.venv/Scripts/activate.bat && echo 'e8b39361-0157-4923-80e1-22d70d46dee6' && python ~/.vscode/extensions/ms-python.python-2023.23.13391009/pythonFiles/printEnvVariables.py
2023-12-12 23:24:37.294 [info] shell: commandPrompt
2023-12-12 23:24:37.426 [info] > .\.venv -c "import pytest"
2023-12-12 23:24:37.431 [info] > conda info --json
2023-12-12 23:24:38.351 [error] Error in worker c:\Users\josverl\.vscode\extensions\ms-python.python-2023.23.13391009\out\client\registryKeys.worker.js TypeError [Error]: Cannot read properties of null (reading 'map')
    at c:\Users\josverl\.vscode\extensions\ms-python.python-2023.23.13391009\out\client\registryKeys.worker.js:1:7884
    at ChildProcess.<anonymous> (c:\Users\josverl\.vscode\extensions\ms-python.python-2023.23.13391009\out\client\registryKeys.worker.js:1:3775)
    at ChildProcess.emit (node:events:513:28)
    at maybeClose (node:internal/child_process:1091:16)
    at ChildProcess._handle.onexit (node:internal/child_process:302:5)
2023-12-12 23:24:38.816 [info] > .\.venv -c "import pip"
2023-12-12 23:24:54.822 [info] Discover tests for workspace name: micropython-stubber - uri: c:\develop\MyPython\micropython-stubber
2023-12-12 23:24:54.822 [info] Running discovery for pytest using the new test adapter.

[eleanorjboyd]

Hi! This looks like a duplicate of this issue #22618, we have just released a fix to insiders and will release to stable later today. Thanks