does it break compatibility with current version of scala
On a different note: I've noticed that HN is starting by to develop the drive-by-I-disagree-voting that Reddit has. That's unfortunate.
It's being developed separately from Scala 2. For example, it interops with 2.11 but not 2.12.
The Scala 2.12 compiler will soon compile the Scala 3 compiler [1]
I like to take a look at /compiler/src/dotty/tools/dotc to whet my appetite from time to time [2].
[1] https://github.com/lampepfl/dotty [2] https://github.com/lampepfl/dotty/tree/master/compiler/src/d...