Simplify debug configuration

@brettcannon @qubitron

Currently the debug configuration (launch.json) is error prone and unnecessarily verbose. I’ll address both separately.

        {
            "name": "Python: Current File",
            "type": "python",
            "request": "launch",
            "stopOnEntry": true,
            "pythonPath": "${config:python.pythonPath}",
            "program": "${file}",
            "cwd": "${workspaceFolder}",
            "env": {},
            "envFile": "${workspaceFolder}/.env",
            "debugOptions": [
                "RedirectOutput"
            ]
        },

1. Verbose

• pythonPath, cwd, env, envFile, debugOptions none of these are required.
• We could easily fill these in automatically and remove the noise and make the config look simpler. This is what we can make it look like:

        {
            "name": "Python: Current File",
            "type": "python",
            "request": "launch",
            "program": "${file}"
        },

2. Error prone

• People change pythonPath in here (now its different to whats in settings.json) and complain about VS Code using different values and similar issues.
• People change environment variable files name in settings.json and forget to change it in here.

Finally: I agree having the settings in the launch.json is useful as it allows developers to immediately notice the different configuration options. How about we add one item with all configuration options and for the rest we simplify the config value as proposed (by rest i’m referring to Python Current File, Python Integrated Terminal, Python External Terminal, Django, Flask, Pyranmid, etc)

[qubitron]

@DonJayamanne yes, removing older versions of flask and pyspark makes sense to me. Don’t want the list to keep exploding !

[DonJayamanne]

@qubitron

• do these .json files support comments? Yes, but we can’t pre-populate the snippets with comments.
• Can I suggest we remove the debug configuration for older versions of flask (this will still be in the snippets. User can click on Add Configuration to get this (see below screen).
• Can I suggest we remove the debug configuration for Pyspark. Similar to above. Only a handful of users using this.