PDM plugin configuration support

[rakuzen25]

Area with issue?

JSON Schema

✔️ Expected Behavior

https://github.com/SchemaStore/schemastore/blob/master/src/schemas/json/partial-pdm.json currently does not support plugin-defined configuration (e.g. pdm.autoexport for https://github.com/pdm-project/pdm-autoexport).

❌ Actual Behavior

Additional properties are not allowed ('autoexport' was unexpected) is shown on validation.

YAML or JSON file that does not work.

# pyproject.toml

# This would work
[tool.pdm.dev-dependencies]
dev = ["black>=24.10.0"]

# But this won't
[[tool.pdm.autoexport]]
filename = "requirements.txt"
without-hashes = true

IDE or code editor.

Visual Studio Code

Are you making a PR for this?

No, someone else must create the PR.

[hyperupcall]

Somewhat related to #3564

[abelcheung]

Currently the awesome PDM list has enlisted 20 PDM plugins, many of which are not under pdm-project umbrella. Probably another case that additionalProperties = true is applicable, as getting all plugin schemas implemented won't be happening in short future. Setting to true seems the fastest way to get things going, until somebody submits new schema required for validating config of each plugin.

[rakuzen25]

Right. I don't know how the current system works for extensions of an existing tool, but I see that some PDM extensions are already being submitted, like #4231. Since I assume people may build private plugins or make changes to existing plugin configurations before publishing, I think it won't hurt to both allow additional properties and figure out how to add existing plugin schemas (at least the ones on the awesome PDM list) to the repo, if that's desired?

[abelcheung]

To present viewpoints in a balanced way, allowing additionalProperties also opens the pandora box of typos. So users can be scratching their head why their [[tool.pdm.autoexports]] fails to work, as hypothetical example. tox-dev/tox#1388 shows a real example, though for ini config format which can't be validated. It could mean trouble for applications which silently discard invalid config instead of making big fat warnings. So maybe need some input from somebody authorative too.