Wortrees setup doesn't run on single model wortree creation

Support Bug Reports
1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

I have this .cursor\worktrees.json

{
  "setup-worktree": [
    "pnpm install",
    "pnpm db:generate",
    "cp $ROOT_WORKTREE_PATH/.env .env"
  ]
}

When I create a new chat and select “worktree” as where to run the agent, using only one model, the worktree setup doesn’t run

Steps to Reproduce

  1. Open a new chat
  2. Below the chat box, select “Worktree”
  3. Start the request

Expected Behavior

The worktree setup shoud run before the the request is sent to the AI model.

Screenshots / Screen Recordings

worktrees.json - artcalendar-app - Cursor 2026-02-.png
worktrees.json - artcalendar-app - Cursor 2026-02-.png308×270 6.03 KB

Operating System

Windows 10/11

Version Information

Version: 2.4.31 (user setup)
VSCode Version: 1.105.1
Commit: 3578107fdf149b00059ddad37048220e41681000
Date: 2026-02-08T07:42:24.999Z
Build Type: Stable
Release Track: Default
Electron: 39.2.7
Chromium: 142.0.7444.235
Node.js: 22.21.1
V8: 14.2.231.21-electron.0
OS: Windows_NT x64 10.0.26200

Does this stop you from using Cursor

No - Cursor works, but with this issue

3

Hey, thanks for the report. There are a few things worth checking:

  1. Open the Output panel (View > Output) and pick “Worktrees Setup” from the dropdown. Does it show anything when you run a single-model worktree run? Any errors, or is it completely empty?

  2. Does the setup work correctly if you use “Use multiple models” (best-of-N) instead of a single model?

  3. Since you’re on Windows, try adding a setup-worktree-windows key next to the existing setup-worktree. It takes priority on Windows:

{
    "setup-worktree-windows": [
        "pnpm install",
        "pnpm db:generate",
        "copy %ROOT_WORKTREE_PATH%\\.env .env"
    ],
    "setup-worktree": [
        "pnpm install",
        "pnpm db:generate",
        "cp $ROOT_WORKTREE_PATH/.env .env"
    ]
}

The Output panel logs should help narrow it down, whether the setup process is actually starting or if it’s failing silently. Let me know what you find.

4

I added the setup-worktree-windows as you said. This is the Output log of the “Worktrees Setup”.

[2026-02-12T13:32:24.161Z] [worktree-setup] checking config
{"composerId":"5be173a1-53fe-4864-9ae1-f3963b74d15f","worktreePath":"C:\\Users\\user\\.cursor\\worktrees\\artcalendar-app__Workspace_\\sme","rootWorkspacePath":"C:\\Users\\user\\Documents\\GitHub\\artcalendar-app","worktreeConfigFile":"file:///c%3A/Users/user/.cursor/worktrees/artcalendar-app__Workspace_/sme/.cursor/worktrees.json","rootConfigFile":"file:///c%3A/Users/user/Documents/GitHub/artcalendar-app/.cursor/worktrees.json","isTargetWindows":true}
[2026-02-12T13:32:24.165Z] [worktree-setup] selected setup spec
{"key":"setup-worktree","hasCommands":true,"hasScript":false,"configPath":"file:///c%3A/Users/user/.cursor/worktrees/artcalendar-app__Workspace_/sme/.cursor/worktrees.json"}
[2026-02-12T13:32:24.197Z] [worktree-setup] started terminal session
{"sessionId":"a8d7f7b4-5b54-4685-844b-c8fd5005eeea","worktreePath":"C:\\Users\\user\\.cursor\\worktrees\\artcalendar-app__Workspace_\\sme"}
[2026-02-12T13:32:24.198Z] [worktree-setup] executing combined Windows script with per-command logs
{"worktreePath":"C:\\Users\\user\\.cursor\\worktrees\\artcalendar-app__Workspace_\\sme","scriptLength":1097}
--: eval: line 1: syntax error near unexpected token `('
--: eval: line 1: `$ErrorActionPreference = 'Stop'; Set-Location -LiteralPath "C:\Users\user\.cursor\worktrees\artcalendar-app__Workspace_\sme"; $env:ROOT_WORKTREE_PATH = "C:\Users\user\Documents\GitHub\artcalendar-app"; Write-Host '[worktree-setup] Working directory: ' (Get-Location); Write-Host "[worktree-setup] [0] $ pnpm install"; pnpm install; if ($LASTEXITCODE -ne $null -and $LASTEXITCODE -ne 0) { Write-Host "[worktree-setup] [0] failed with exit code $LASTEXITCODE"; exit $LASTEXITCODE } else { Write-Host "[worktree-setup] [0] done" }; Write-Host "[worktree-setup] [1] $ pnpm db:generate"; pnpm db:generate; if ($LASTEXITCODE -ne $null -and $LASTEXITCODE -ne 0) { Write-Host "[worktree-setup] [1] failed with exit code $LASTEXITCODE"; exit $LASTEXITCODE } else { Write-Host "[worktree-setup] [1] done" }; Write-Host "[worktree-setup] [2] $ cp $ROOT_WORKTREE_PATH/.env .env"; cp $ROOT_WORKTREE_PATH/.env .env; if ($LASTEXITCODE -ne $null -and $LASTEXITCODE -ne 0) { Write-Host "[worktree-setup] [2] failed with exit code $LASTEXITCODE"; exit $LASTEXITCODE } else { Write-Host "[worktree-setup] [2] done" }'
[2026-02-12T13:32:25.530Z] [worktree-setup] all commands finished
{"durationMs":1365}
[2026-02-12T13:32:25.531Z] [worktree-setup] ended terminal session
{"sessionId":"a8d7f7b4-5b54-4685-844b-c8fd5005eeea"}

I tried also with multiple models and the setup doesn’t work. These are the logs

[2026-02-12T13:38:01.711Z] [worktree-setup] checking config
{"composerId":"74e55797-6be6-4a24-937b-6d9799140005","worktreePath":"C:\\Users\\user\\.cursor\\worktrees\\artcalendar-app__Workspace_\\zgh","rootWorkspacePath":"C:\\Users\\user\\Documents\\GitHub\\artcalendar-app","worktreeConfigFile":"file:///c%3A/Users/user/.cursor/worktrees/artcalendar-app__Workspace_/zgh/.cursor/worktrees.json","rootConfigFile":"file:///c%3A/Users/user/Documents/GitHub/artcalendar-app/.cursor/worktrees.json","isTargetWindows":true}
[2026-02-12T13:38:01.727Z] [worktree-setup] selected setup spec
{"key":"setup-worktree","hasCommands":true,"hasScript":false,"configPath":"file:///c%3A/Users/user/.cursor/worktrees/artcalendar-app__Workspace_/zgh/.cursor/worktrees.json"}
[2026-02-12T13:38:01.746Z] [worktree-setup] started terminal session
{"sessionId":"3abfac18-a128-47c2-96fe-1130c5d33687","worktreePath":"C:\\Users\\user\\.cursor\\worktrees\\artcalendar-app__Workspace_\\zgh"}
[2026-02-12T13:38:01.746Z] [worktree-setup] executing combined Windows script with per-command logs
{"worktreePath":"C:\\Users\\user\\.cursor\\worktrees\\artcalendar-app__Workspace_\\zgh","scriptLength":1097}
--: eval: line 1: syntax error near unexpected token `('
--: eval: line 1: `$ErrorActionPreference = 'Stop'; Set-Location -LiteralPath "C:\Users\user\.cursor\worktrees\artcalendar-app__Workspace_\zgh"; $env:ROOT_WORKTREE_PATH = "C:\Users\user\Documents\GitHub\artcalendar-app"; Write-Host '[worktree-setup] Working directory: ' (Get-Location); Write-Host "[worktree-setup] [0] $ pnpm install"; pnpm install; if ($LASTEXITCODE -ne $null -and $LASTEXITCODE -ne 0) { Write-Host "[worktree-setup] [0] failed with exit code $LASTEXITCODE"; exit $LASTEXITCODE } else { Write-Host "[worktree-setup] [0] done" }; Write-Host "[worktree-setup] [1] $ pnpm db:generate"; pnpm db:generate; if ($LASTEXITCODE -ne $null -and $LASTEXITCODE -ne 0) { Write-Host "[worktree-setup] [1] failed with exit code $LASTEXITCODE"; exit $LASTEXITCODE } else { Write-Host "[worktree-setup] [1] done" }; Write-Host "[worktree-setup] [2] $ cp $ROOT_WORKTREE_PATH/.env .env"; cp $ROOT_WORKTREE_PATH/.env .env; if ($LASTEXITCODE -ne $null -and $LASTEXITCODE -ne 0) { Write-Host "[worktree-setup] [2] failed with exit code $LASTEXITCODE"; exit $LASTEXITCODE } else { Write-Host "[worktree-setup] [2] done" }'
[2026-02-12T13:38:03.096Z] [worktree-setup] all commands finished
{"durationMs":1369}
[2026-02-12T13:38:03.097Z] [worktree-setup] ended terminal session
{"sessionId":"3abfac18-a128-47c2-96fe-1130c5d33687"}
[2026-02-12T13:38:18.476Z] [worktree-setup] checking config
{"composerId":"2c7fd8c3-978b-4e32-96b0-c3489e7af9f9","worktreePath":"C:\\Users\\user\\.cursor\\worktrees\\artcalendar-app__Workspace_\\cjk","rootWorkspacePath":"C:\\Users\\user\\Documents\\GitHub\\artcalendar-app","worktreeConfigFile":"file:///c%3A/Users/user/.cursor/worktrees/artcalendar-app__Workspace_/cjk/.cursor/worktrees.json","rootConfigFile":"file:///c%3A/Users/user/Documents/GitHub/artcalendar-app/.cursor/worktrees.json","isTargetWindows":true}
[2026-02-12T13:38:18.496Z] [worktree-setup] selected setup spec
{"key":"setup-worktree-windows","hasCommands":true,"hasScript":false,"configPath":"file:///c%3A/Users/user/.cursor/worktrees/artcalendar-app__Workspace_/cjk/.cursor/worktrees.json"}
[2026-02-12T13:38:18.519Z] [worktree-setup] started terminal session
{"sessionId":"f264c4f9-e7df-4658-8dd0-d3fe44908ad4","worktreePath":"C:\\Users\\user\\.cursor\\worktrees\\artcalendar-app__Workspace_\\cjk"}
[2026-02-12T13:38:18.519Z] [worktree-setup] executing combined Windows script with per-command logs
{"worktreePath":"C:\\Users\\user\\.cursor\\worktrees\\artcalendar-app__Workspace_\\cjk","scriptLength":1103}
--: eval: line 1: syntax error near unexpected token `('
--: eval: line 1: `$ErrorActionPreference = 'Stop'; Set-Location -LiteralPath "C:\Users\user\.cursor\worktrees\artcalendar-app__Workspace_\cjk"; $env:ROOT_WORKTREE_PATH = "C:\Users\user\Documents\GitHub\artcalendar-app"; Write-Host '[worktree-setup] Working directory: ' (Get-Location); Write-Host "[worktree-setup] [0] $ pnpm install"; pnpm install; if ($LASTEXITCODE -ne $null -and $LASTEXITCODE -ne 0) { Write-Host "[worktree-setup] [0] failed with exit code $LASTEXITCODE"; exit $LASTEXITCODE } else { Write-Host "[worktree-setup] [0] done" }; Write-Host "[worktree-setup] [1] $ pnpm db:generate"; pnpm db:generate; if ($LASTEXITCODE -ne $null -and $LASTEXITCODE -ne 0) { Write-Host "[worktree-setup] [1] failed with exit code $LASTEXITCODE"; exit $LASTEXITCODE } else { Write-Host "[worktree-setup] [1] done" }; Write-Host "[worktree-setup] [2] $ copy %ROOT_WORKTREE_PATH%\.env .env"; copy %ROOT_WORKTREE_PATH%\.env .env; if ($LASTEXITCODE -ne $null -and $LASTEXITCODE -ne 0) { Write-Host "[worktree-setup] [2] failed with exit code $LASTEXITCODE"; exit $LASTEXITCODE } else { Write-Host "[worktree-setup] [2] done" }'
[2026-02-12T13:38:21.086Z] [worktree-setup] all commands finished
{"durationMs":2590}
[2026-02-12T13:38:21.088Z] [worktree-setup] ended terminal session
{"sessionId":"f264c4f9-e7df-4658-8dd0-d3fe44908ad4"}
5

I have the same issue on mac. When this race-condition issue will be resolved?

6

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