Compile properties as constants

[jasonmoore2k]

Rather than
case object BuildInfo { val version: String = "0.1.0-SNAPSHOT" }
could we do
case object BuildInfo { final val version = "0.1.0-SNAPSHOT" }
One reason for doing this would be so that these properties could be used as annotation arguments.

[dwijnand]

So the reason that that would be useable as an annotation argument is because it becomes a constant literal that gets inlined at compile time.

The things about inlining is that you should really not inline from a library to another library. Inlining should only happen in applications.

Therefore I think this should be possible, but only as an opt-in.

WDYT?

[jasonmoore2k]

Good point about use within library vs exposing it to another. I hadn't considered that.

For context I'm looking to use this at the 'edge of the world' (cli) not in a library that will be packaged into other apps.

An opt-in sounds like a good approach to leave existing behavior as-is.

[magneticflux-]

Has there been any progress on this issue? I'm in favor of adding an opt-in for this. I'm also using this for a CLI project that uses annotations.