migrates to 2.11.0-RC1

[xeno-by]

Migrates scala/async to scala/scala#3452 that is planned to be merged into trunk before 2.11.0-RC1. No more casts to Global. No more scala.reflect.internal.SymbolTable. /cc @retronym

[retronym]

Wow. This is really "above and beyond" stuff.

[xeno-by]

Updated initial commits so that they don't do anything hacky to scalaHome, etc. Now this thing could theoretically be merged after RC1 is out.

upd. I'd especially like to point out that every single commit in this chain builds and passes all the tests successfully, so you might want to keep history (or maybe even make it more fine-grained in the case of the last commit, which required me to make a bulk of changes at once) to simplify potential troubleshooting.

In the meanwhile, to take a closer look at the pull request, launch sbt using sbt -scala-version 2.11.0-SNAPSHOT -scala-home "<palladium0>/build/pack" "$@", where <palladium0> is path to a checkout of the aforementioned pull request to scala/scala.

[retronym]

cheers

Protip: The PR validator publishes snapshots:

http://private-repo.typesafe.com/typesafe/scala-pr-validation-snapshots/org/scala-lang/scala-compiler/

cat ~/.sbt/0.13/global.sbt
resolvers ++= (
  if (scalaVersion.value.endsWith("-SNAPSHOT"))
    List("pr-scala snapshots" at "http://private-repo.typesafe.com/typesafe/scala-pr-validation-snapshots/")
  else
    Nil
)

[xeno-by]

Do I need to enable something special in order for SBT to pick up this config? I tried to build SBT using such a SNAPSHOT builds, it says "getting scala blah blah" and then displays a not found error with "pr-scala snapshots" not present in the list of repos it's considered.

[retronym]

It might depend on where your SBT script looks for its sbt.global.home. The default value is ~/sbt/0.13.

[xeno-by]

How do I figure out where's sbt.global.home?

[retronym]

See http://www.scala-sbt.org/release/docs/Detailed-Topics/Command-Line-Reference

(The defaults look out of date, see also www.scala-sbt.org/0.13.0/docs/Community/ChangeSummary_0.13.0.html)

[retronym]

I meant to say sbt.global.base