Debugger times out if shell startup is "slow"

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#1,579 opened on May 7, 2024 5 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 4/5
Estimated time: 3-5 days
Newbie friendliness: 45/100

Issue type: Bug
Clarity: Mostly clear
Activity status: Quiet
Tech stack: python, vscode
Domain: developer-experience, devtools

Research direction

Reproduce the timeout by adding a long sleep to ~/.zshrc or ~/.bashrc, then starting a debugpy session from VS Code. Trace the terminal startup and debug command handoff; done means the debugger waits for the shell to become ready and starts successfully instead of discarding the command.

Written by the indexing model from the issue text.

Description

bug

Environment data

debugpy version: v2024.6.0
OS and version: macos 14.4.1
Python version (& distribution if applicable, e.g. Anaconda): 3.10 CPython
Using VS Code or Visual Studio: VS Code

Actual behavior

Debugger never starts and shows "timeout" error window.
In the terminal output you can see that the debugger command has been "pasted"/send to the terminal but the terminal was not ready yet. Hence, the command is discarded.
Its very similar to the issue described here: https://github.com/microsoft/vscode-js-debug/issues/1642

Expected behavior

Debugger waits for terminal to finish and then sends the command to the terminal.

Steps to reproduce:

add a slow command to shell startup, e.g. "sleep 120" to ~/.zshrc or ~/.bashrc
start any debug session with debugpy
debugger will timeout

Background:

I have a zshrc setup that includes some startup scripts which usually take ~0.5-3 seconds. I've never found a satisfying workaround for this and many of the suggested solutions in the Issues in this repo never worked for me.

Current Workaround:

Currently, I am using a setting which works well enough for me
Here is the link to the vscode docs: https://code.visualstudio.com/docs/terminal/profiles#_configuring-the-taskdebug-profile
and here is the setting for me:

{ 
  "terminal.integrated.automationProfile.osx": {
    "path": "bash",
  },
}

However, I wish this extension/debugger would support the same solution as https://github.com/microsoft/vscode-js-debug/issues/1642.

Dominant language: Python
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