Debugging packer with visual studio code

[Khai Do]

I'm a newbie with both visual studio code, and Go. I have VS code (Version: 1.37.1) with the Go (ver 0.11.4) extension installed. I am attempting to debug packer with this setup however I cannot seem to make the debugger stop on a breakpoint. I have set '-debug' and PACKER_LOG=1. I think the problem is because packer uses panicwrap which seems to spawn a separate process to run packer and the VS code debugger doesn't have access to that process. I'm wondering if anybody else uses VS code to debug packer and whether they are able to debug packer code with it? I'm open to using other setup as well so I would also be interested in suggestions on how to setup debugging for packer development in general.  Thanks. 

[Khai Do]

Also this is my VS code launch configuration:

{
 "version": "0.2.0",
 "configurations": [
 {
 "name": "Launch",
 "type": "go",
 "request": "launch",
 "mode": "auto",
 "program": "${fileDirname}",
 "env": {"PACKER_LOG": "1", "AWS_PROFILE": "itsandbox", "AWS_REGION": "us-east-1"},
 "cwd": "/work/packer/test",
 "args": ["build", "-debug", "-on-error=ask", "template.json"]
 }
 ]
}

[Rickard von Essen]

Each plugin is running in a separate process and the communicates with RCP over a socket. So using a debugger will not work (be complicated at least).

But most of the Packer code is really simple and easy to follow with PACKER_LOG turned on. If that doesn't work adding some extra debug print outs when you have homed in on the problem is usually enough.

What are trying to do? 

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[Khai Do]

I'm not trying to do anything specific yet I just wanted to prepare a
general development environment to make contributions which, for me,
includes a debugger. Thanks for the clarification Rickard but would
be nice to have this info in the documentation somewhere so I wouldn't
have to waste my time trying to figure out why debugging doesn't work
with packer.

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[Rickard von Essen]

> but would

be nice to have this info in the documentation somewhere so I wouldn't

have to waste my time trying to figure out why debugging doesn't work

with packer.

Yes that would be nice (but as always with open source software someone has to contribute that) 

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[Khai Do]

toche Rickard, https://github.com/hashicorp/packer/pull/8054

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