Commits on Sep 29, 2023

1. Use -Ystdlib to add Scala 2 lib TASTY to scalac (internal only) …

   This flag only works on the `scala3-bootstrapped/scalac` in the dotty
   project. It is intended for internal testing.
   
   Currently it is a bit expensive to compile the Scala 2 library TASTy.
   One reason in for this is that we need to use `-Ycheck:all` when
   compiling it to make sure that `-Yscala2-stdlib` is working properly.
   
   We only allow `scala3-bootstrapped/scalac` and not `scalac` to have this
   dependency for two reasons. First, we do want to be able to compile and
   run `scalac` command fast to reduce development testing time. Second, we
   do not have a stable enough version of the Scala 2 library TASTy yet.
   
   We also do not enable the Scala 2 library TASTy by default on
   `scala3-bootstrapped/scalac` because we still need this command to test
   against the current version of the library. Stability is also a concern
   for this version of the command.

   

   nicolasstucki committed Sep 29, 2023
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