Environment misidentified: uv-created .venv directory incorrectly detected as Poetry environment

[copdips]

Type: Bug

Description

VS Code Python extension incorrectly identifies virtual environments created by uv as Poetry environments in the status bar, even when Poetry was not used to create the environment.

Steps to Reproduce

1. Create a Python project with a pyproject.toml file (but without [tool.poetry] section)
2. Use uv venv to create a virtual environment (creates .venv directory)
3. Select the Python interpreter from the .venv directory in VS Code
4. Observe the status bar showing "poetry env" instead of the actual environment type

Expected Behavior

The status bar should correctly identify the environment type or show a generic "venv" instead of incorrectly labeling it as "poetry env".

Actual Behavior

VS Code status bar displays "poetry env" even though the environment was created with uv, not Poetry.

Extension version: 2025.12.0
VS Code version: Code 1.103.2 (6f17636121051a53c88d3e605c491d22af2ba755, 2025-08-20T16:45:34.255Z)
OS version: Windows_NT x64 10.0.26100
Modes:
Remote OS version: Linux x64 6.6.87.2-microsoft-standard-WSL2
Remote OS version: Linux x64 6.6.87.2-microsoft-standard-WSL2

• Python version (& distribution if applicable, e.g. Anaconda):
• Type of virtual environment used (e.g. conda, venv, virtualenv, etc.): Unknown
• Value of the python.languageServer setting: None

User Settings

languageServer: "None"

testing
• cwd: "<placeholder>"
• pytestArgs: "<placeholder>"
• pytestEnabled: true

experiments
• optInto: ["pythonREPLSmartSend"]

Installed Extensions

Extension Name	Extension Id	Version
change-case	wma	1.0.0
claude-code	Ant	1.0.89
claude-dev	sao	3.26.7
code-runner	for	0.12.2
code-spell-checker	str	4.2.5
copilot	Git	1.364.0
copilot-chat	Git	0.30.3
coredumpy-vscode	gao	0.2.1
data-workspace-vscode	ms-	0.6.3
datawrangler	ms-	1.22.0
debugpy	ms-	2025.11.2025072901
dependi	fil	0.7.15
docker	doc	0.16.0
docker-compose	p1c	0.5.1
even-better-toml	tam	0.21.2
file-downloader	min	1.0.13
git-graph	mhu	1.30.0
githistory	don	0.6.20
gitignore	cod	0.10.0
gitlens	eam	17.4.1
gremlins	nho	0.26.0
html-comment	hea	2.5.0
intellicode-api-usage-examples	Vis	0.2.9
java	red	1.44.0
jinjahtml	sam	0.20.0
js-debug	ms-	1.102.0
jupyter	ms-	2025.7.0
jupyter-renderers	ms-	1.3.0
k8s-snippets	dog	0.4.2
live-server	ms-	0.4.15
markdown-all-in-one	yzh	3.6.3
markdown-image	han	1.1.49
markdown-preview-enhanced	shd	0.8.19
markdowntable	Tak	0.13.0
markmap-vscode	ger	0.2.11
metals	sca	1.55.0
mssql	ms-	1.35.0
mypy-type-checker	ms-	2025.2.0
parquet-viewer	dvi	2.11.4
partial-diff	ryu	1.4.3
postman-for-vscode	Pos	1.16.1
prettier-vscode	esb	11.0.0
pretty-ts-errors	Yoa	0.6.1
python	ms-	2025.13.2025082601
rainbow-csv	mec	3.21.0
rest-client	hum	0.25.1
restructuredtext-pack	lex	1.0.3
ruff	cha	2025.24.0
rust-analyzer	rus	0.3.2593
scalene	Eme	0.0.10
seito-openfile	Fr4	2.3.0
shellcheck	tim	0.38.3
simple-react-snippets	bur	1.2.8
sort-lines	Tyr	1.12.0
sourcery	sou	1.37.0
sql-bindings-vscode	ms-	0.4.1
sql-database-projects-vscode	ms-	1.5.3
sqlite-viewer	qwt	0.10.6
sqltools	mtx	0.28.4
sqltools-driver-mssql	mtx	0.4.6
sqltools-driver-pg	mtx	0.5.5
sqltools-driver-sqlite	mtx	0.5.2
tailwind-fold	sti	0.2.0
template-string-converter	meg	0.6.1
test-adapter-converter	ms-	0.2.1
text-marker	ryu	1.11.0
todo-tree	Gru	0.0.226
ty	ast	2025.37.12311339
viztracer-vscode	gao	0.3.0
volar	Vue	3.0.6
vscode-codemetrics	kis	1.26.1
vscode-containers	ms-	2.1.0
vscode-coverage-gutters	rya	2.14.0
vscode-data-preview	Ran	2.3.0
vscode-docker	ms-	2.0.0
vscode-dotnet-runtime	ms-	2.3.7
vscode-edit-csv	jan	0.11.5
vscode-eslint	dba	3.0.16
vscode-github-actions	git	0.27.2
vscode-gradle	vsc	3.16.4
vscode-html-css	ecm	2.0.13
vscode-insertdatestring	jsy	2.3.1
vscode-java-debug	vsc	0.58.2
vscode-java-dependency	vsc	0.24.1
vscode-java-pack	vsc	0.29.2
vscode-java-test	vsc	0.43.1
vscode-js-profile-table	ms-	1.0.10
vscode-jumpy	wma	0.3.1
vscode-jupyter-cell-tags	ms-	0.1.9
vscode-jupyter-powertoys	ms-	0.1.1
vscode-jupyter-slideshow	ms-	0.1.6
vscode-kubernetes-tools	ms-	1.3.25
vscode-leetcode	Lee	0.18.4
vscode-markdownlint	Dav	0.60.0
vscode-maven	vsc	0.44.0
vscode-office	cwe	3.5.4
vscode-open-in-github	fab	2.3.1
vscode-openapi	42C	4.38.0
vscode-postgres	cko	1.4.3
vscode-proto3	zxh	0.5.5
vscode-pull-request-github	Git	0.116.2
vscode-pylance	ms-	2025.7.102
vscode-python-envs	ms-	1.3.12271020
vscode-python-test-adapter	lit	0.8.2
vscode-quick-select	dba	0.2.9
vscode-react-native	msj	1.13.0
vscode-sort-json	ric	1.20.0
vscode-table-formatter	shu	1.2.1
vscode-tailwindcss	bra	0.14.26
vscode-test-explorer	hbe	2.22.1
vscode-thunder-client	ran	2.37.5
vscode-versionlens	pfl	1.22.2
vscode-xml	red	0.29.0
vscode-yaml	red	1.18.0
vscodeintellicode	Vis	1.3.2
yaml-plus-json	hil	1.13.0

System Info

Item	Value
CPUs	11th Gen Intel(R) Core(TM) i7-11370H @ 3.30GHz (8 x 3303)
GPU Status	2d_canvas: enabled 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 skia_graphite: disabled_off trees_in_viz: disabled_off video_decode: enabled video_encode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off
Load (avg)	undefined
Memory (System)	15.79GB (1.08GB free)
Process Argv	--crash-reporter-id bb220bc4-eaf8-40b8-a6e4-da196f80e1e5
Screen Reader	no
VM	0%

Item	Value
Remote	WSL: Ubuntu-24.04
OS	Linux x64 6.6.87.2-microsoft-standard-WSL2
CPUs	11th Gen Intel(R) Core(TM) i7-11370H @ 3.30GHz (8 x 0)
Memory (System)	9.71GB (1.16GB free)
VM	0%

Item	Value
Remote	WSL: Ubuntu-24.04
OS	Linux x64 6.6.87.2-microsoft-standard-WSL2
CPUs	11th Gen Intel(R) Core(TM) i7-11370H @ 3.30GHz (8 x 0)
Memory (System)	9.71GB (1.16GB free)
VM	0%

A/B Experiments

vsliv368cf:30146710
pythonvspyt551:31249599
binariesv615:30325510
vscrpc:30673769
nativeloc1:31344060
dwcopilot:31170013
dwoutputs:31242946
copilot_t_ci:31333650
e5gg6876:31282496
996jf627:31283433
pythonrdcb7:31342333
usemplatestapi:31297334
747dc170:31275177
aj953862:31281341
9d2cg352:31346308
nesew2to5:31336538
agentclaude:31350858
nes-set-on:31351930
6abeh943:31336334
envsactivate1:31353494
0927b901:31350571
ji9b5146:31348712
custommodel2t:31371781
45650338:31358607
0cj2b977:31352657
justeven_python:31371804
newchatstate:31363049
pylancealldocst:31371774
cloudbuttonc:31374191
retryenabled:31370050
3efgi100_wstrepl:31374188

[eleanorjboyd]

Hi! Do you have the python environments extension in usage? You can see if you go to the sidepanel and see a "python" logo. If you click on that it will expand info on your environments.

If so, can you run Python: Run Python Environment Tool (PET) in Terminal... and then select "resolve" and past in the path to your environment that is being incorrectly labeled and let me know that output. Thanks

[copdips]

@eleanorjboyd

I removed the .venv, and recreated it by uv venv and then uv sync:

09:33 $ "/home/xiang/.vscode-server/extensions/ms-python.vscode-python-envs-1.3.12271020/python-env-tools/bin/pet" resolve "/home/xiang/git/copdips.github.io/.venv"
Environment found for "/home/xiang/git/copdips.github.io/.venv"
Manager (Poetry)
   Executable  : /home/xiang/.local/bin/poetry

Environment (Poetry)
   Executable  : /home/xiang/git/copdips.github.io/.venv/bin/python
   Version     : 3.13.0.final.0
   Prefix      : /home/xiang/git/copdips.github.io/.venv
   Project     : /home/xiang/git/copdips.github.io
   Architecture: x64
   Manager     : Poetry, /home/xiang/.local/bin/poetry
   Symlinks    : "/home/xiang/git/copdips.github.io/.venv/bin/python"
               : "/home/xiang/git/copdips.github.io/.venv/bin/python3"
               : "/home/xiang/git/copdips.github.io/.venv/bin/python3.13"

Resolve completed in 392ms

[eleanorjboyd]

Can you confirm you do not have any python-env.defaultEnvManager set anywhere in your user or workspace settings?

Cc @DonJayamanne looks like PET is incorrectly identifying the environment manager.

[copdips]

user level setting:

workspace level setting:

but the workspace settings is set by vscode automatically, not me, even I delete it, it still recreated it with poetry once I select .venv/bin/python as python intepreter.

[eleanorjboyd]

thanks for that info ya- once the extension thinks the select interpreter you want to use is of type poetry, it will save that as default.

[copdips]

some extension output here:

(it seems that the extension didn't even try to search uv)

Details

2025-09-09 22:46:13.612 [info] [Python Environments] Resolved Python Environment /home/xiang/git/fastapi-demo/.venv/bin/python
2025-09-09 22:46:13.648 [info] [Python Environments] Discovered manager: (Conda) /home/xiang/miniconda3/bin/conda
2025-09-09 22:46:13.649 [info] [Python Environments] Discovered env: /home/xiang/miniconda3/bin/python
2025-09-09 22:46:13.650 [info] [Python Environments] Locator Conda took 20.058318144s
2025-09-09 22:46:13.650 [info] [Python Environments] Locator Homebrew took 308.235µs
2025-09-09 22:46:13.650 [info] [Python Environments] Locator LinuxGlobal took 943.134202ms
2025-09-09 22:46:13.650 [info] [Python Environments] Locator PipEnv took 506.519µs
2025-09-09 22:46:13.651 [info] [Python Environments] Locator Pixi took 54.676µs
2025-09-09 22:46:13.651 [info] [Python Environments] Locator Poetry took 32.720616ms
2025-09-09 22:46:13.652 [info] [Python Environments] Locator PyEnv took 1.446164256s
2025-09-09 22:46:13.652 [info] [Python Environments] Locator Venv took 48.453µs
2025-09-09 22:46:13.652 [info] [Python Environments] Locator VirtualEnv took 46.647µs
2025-09-09 22:46:13.652 [info] [Python Environments] Locator VirtualEnvWrapper took 836.149µs
2025-09-09 22:46:13.652 [info] [Python Environments] Locator GlobalVirtualEnvs took 37.596646ms
2025-09-09 22:46:13.652 [info] [Python Environments] Locator Locators took 20.079096248s
2025-09-09 22:46:13.652 [info] [Python Environments] Locator Path took 18.996485065s
2025-09-09 22:46:13.652 [info] [Python Environments] Locator Workspaces took 2.113674568s
2025-09-09 22:46:13.653 [info] [Python Environments] Pyenv not found, turning off pyenv features.
2025-09-09 22:46:13.694 [info] [Python Environments] Telemetry:  {"event":"RefreshPerformance","data":{"refreshPerformance":{"total":20082,"breakdown":{"GlobalVirtualEnvs":37,"Locators":20079,"Path":18996,"Workspaces":2113},"locators":{"Conda":20058,"Homebrew":0,"LinuxGlobal":943,"PipEnv":0,"Pixi":0,"Poetry":32,"PyEnv":1446,"Venv":0,"VirtualEnv":0,"VirtualEnvWrapper":0}}}}
2025-09-09 22:46:14.164 [warning] [Python Environments] Inaccurate Python Environment Info for => 
Environment (Poetry)
   Executable  : /home/xiang/git/fastapi-demo/.venv/bin/python
   Version     : 3.12.7
   Prefix      : /home/xiang/git/fastapi-demo/.venv
   Project     : /home/xiang/git/fastapi-demo
   Manager     : Poetry, /home/xiang/.local/bin/poetry
   Symlinks    : "/home/xiang/git/fastapi-demo/.venv/bin/python"
               : "/home/xiang/git/fastapi-demo/.venv/bin/python3"
               : "/home/xiang/git/fastapi-demo/.venv/bin/python3.12"
.
Resolved as => 
Environment (Poetry)
   Executable  : /home/xiang/git/fastapi-demo/.venv/bin/python
   Version     : 3.12.3.final.0
   Prefix      : /home/xiang/git/fastapi-demo/.venv
   Project     : /home/xiang/git/fastapi-demo
   Architecture: x64
   Manager     : Poetry, /home/xiang/.local/bin/poetry
   Symlinks    : "/home/xiang/git/fastapi-demo/.venv/bin/python"
               : "/home/xiang/git/fastapi-demo/.venv/bin/python3"
               : "/home/xiang/git/fastapi-demo/.venv/bin/python3.12"

Incorrect information => 
Environment Some(Poetry) incorrectly identified
   Version is incorrect

2025-09-09 22:46:14.164 [info] [Python Environments] Resolved Python Environment /home/xiang/git/fastapi-demo/.venv/bin/python
2025-09-09 22:46:15.831 [error] [Python Environments] Shell execution timed out: source /home/xiang/git/fastapi-demo/.venv/bin/activate
2025-09-09 22:46:15.831 [info] [Python Environments] Terminal is activated: /home/xiang/git/fastapi-demo/.venv
2025-09-09 22:46:15.831 [error] [Python Environments] Shell execution timed out: source /home/xiang/git/fastapi-demo/.venv/bin/activate
2025-09-09 22:46:15.831 [info] [Python Environments] Terminal is activated: /home/xiang/git/fastapi-demo/.venv

[DonJayamanne]

@copdips
Please can you run Python: Run Python Environment Tool (PET) in Terminal... and then select "Find All.." and please can you share all of the output.