community-build

> PS Perhaps they should make an actual unit test suite for their compiler. Instead they have a couple of dozen tests and have to guess if their compiler PR will break things. You did not even try to formulate it in a way that could be interpreted as you just not knowing; instead you make blatant false statements in the most confident way possible. Your statement is therefore an outright lie, spreading FUD. As a matter of fact the Scala compiler has thousands, likely even tens of thousands of test cases. https://github.com/scala/scala3/tree/main/tests But that's not all. Scala (2 & 3) has also a test case called "community build" where new compiler releases are tested by compiling millions of LOCs from all kinds of Scala OpenSource projects. https://github.com/VirtusLab/community-build3 https://github.com/scala/community-build

From what I saw in the latest presentation by Martin, we can expect Scala 3 to be released in late Spring/early Summer 2021. Part of the release testing is building the community release[0], which is a large part of the relevant Scala F/OSS code out there. Whether you consider that to be production ready you have to decide for yourself, I myself am pretty happy about it. Keep in mind that for now Scala 2 style code will still be compiled and you can use existing Scala 2 code in your Scala 3 project. The migration should be pretty smooth. [0] https://github.com/scala/community-build

Scala also has something similar, called the community build: https://github.com/scala/community-builds It does not contain everything, but (open source) authors are encourage to add their library to the mix.