Ref #2634
updateSbtClassifiers uses an artificially created dependency graph set
in classifiersModule. The problem is that ivyScala instance is reused
from the outer scope that has the user project's scalaVersion as
demonstrated as follows:
scala> val is = (ivyScala in updateSbtClassifiers).eval
is: Option[sbt.IvyScala] =
Some(IvyScala(2.9.3,2.9.3,List(),true,false,true,org.scala-lang))
This change fixes#2686 by redefining ivyScala with scalaVersion and
scalaBinaryVersion scoped to updateSbtClassifiers task. The existing
scripted test was modified to reproduce the bug.
Def.make could take 10099ms for 100 subprojects. This would display
logs probably for projects with more than 10 subprojects, which might
pause for a few seconds during load.
LogManager implementation is modified to use ManagedLogger, which can swap out backing Appenders without re-creating the log instance.
The State was also changed to track `currentCommand: Option[Exec]`. `Exec` knows the origin of the command invocation, and using that we can now send the network-originated events only to the network clients.
Combined together, this implements log splitting between the sbt clients (channels).
This introduces ManagedLogger, which is a wrapper around Log4j2's async logging.
Log4j2 separates the notion of logger (the code that collects events) and appender (the code that acts on events). The old code is kept around intentionally to minimize breakage during transition.
This is the beginning of a lightweight client, which talks to the
server over Contraband-generated JSON API. Given that the server is
started on port 5173:
```
$ cd /tmp/bogus
$ sbt client localhost:5173
> compile
StatusEvent(Processing, Vector(compile, server))
StatusEvent(Ready, Vector())
StatusEvent(Processing, Vector(, server))
StatusEvent(Ready, Vector())
```
Fixes#2546. Ref #958
scripted compiler-project/error-in-invalidated has been failing
frequently on Travis CI. It seems like incremental compiler is not
catching the change in source occasionally for `changes/A2.scala`.
Forward-port of #2565