Passing options to func host start?

[foucdeg]

I need to customize the command that the debugger runs when starting the local function runner.
Specifically, I need to pass a --script-root argument because my functions are in a subdirectory.

My launch.json is the default generated one :

{
  "name": "Attach to Python Functions",
  "type": "python",
  "request": "attach",
  "port": 9091,
  "preLaunchTask": "func: host start"
}

and the associated task from tasks.json is also the default one:

{
  "type": "func",
  "command": "host start",
  "problemMatcher": "$func-watch",
  "isBackground": true,
  "dependsOn": "pipInstall"
},

and I expected to be able to add a "args" key in there with arguments to pass to func host start.

When I do, the linter tells me that "args" is an unexpected option and it is ignored. The command that is run is just .env/bin/activate && func host start.

My current alternative is to run func host start --script-root functions as a shell command but I'm having trouble making it attach to the debugger.

Any way to pass options to func host start from the launch or task configuration?

[ejizba]

@foucdeg you should have a few options. Something like this:

{
    "version": "2.0.0",
    "tasks": [
        {
            "type": "func",
            "command": "host start",
            "problemMatcher": "$func-watch",
            "isBackground": true,
            "dependsOn": "pipInstall",
            "options": {
                "cwd": "${workspaceFolder}/sub"
            }
        },
    ]
}

Or something like this:

{
    "version": "2.0.0",
    "tasks": [
        {
            "type": "func",
            "command": "host start --script-root",
            "problemMatcher": "$func-watch",
            "isBackground": true,
            "dependsOn": "pipInstall"
        },
    ]
}

(If you do this option, you have to change the id of preLaunchTask in launch.json as well)

[foucdeg]

Thanks!

I made it work by adding a label to the task:

{
    "version": "2.0.0",
    "tasks": [
        {
            "type": "func",
            "command": "host start --script-root functions",
            "label": "func: host start",
            "problemMatcher": "$func-watch",
            "isBackground": true,
            "dependsOn": "pipInstall"
        },
    ]
}

My point stands, this is a bit awkward, it would be a nice feature to be able to pass flags to the command (perhaps as options along with cwd).

That would be a feature request, and looking at the code, it shouldn't be too hard for me to submit a PR. What do you think?

[ejizba]

@foucdeg I agree it's awkward, but I've been waiting for VS Code to fix this bug to do anything about it: microsoft/vscode#58836

I'm guessing any PR you did would have to work-around that bug, but you're welcome to try.

[alexweininger]

microsoft/vscode#58836 is done