Is the platform transitively closed?

[jvican]

@dragos

I really think there needs to be a clearer description of the goals of the platform, in particular how it is consumed by users.

@dragos

Another question is whether there should be two libraries that solve the same problem. How many JSON libraries should there be in the platform? Any limit here is very tricky to impose, so naturally there will be many. How would they interoperate? Other libraries will make a decision on what JSON library they use, and now you’re suddenly having subsets of the platform that don’t interoperate.

I’ve discussed these issues here and here.

In short, your definition of the Scala Platform as a consistent logical entity is pretty appropriate. This is also why I think that being close with a whitelist is a benefit. I wouldn’t enjoy having problems with unmaintained external dependencies that cannot be taken up by anyone in the Community because of lack of time/resources.