Bug: fork running wrong scala version

[Josh Cough]

Hi Mark,

Seth and I encountered an error where when we override fork, and do xsbt run, xsbt seems to be running the wrong Scala version. (it could be something else, but obviously similar)

I've attached a very, very simple project with which you can reproduce the error. If you uncomment the fork line in the Project file, you'll get the error. With it commented out, it prints the collect scala version.

Here is all the code:

import sbt._

class ForkFailProject(info: ProjectInfo) extends DefaultProject(info) {
//  override def fork = Some(new ForkScalaRun {})
}

object ForkFail {
  def main(args:Array[String]) {
    println(scala.util.Properties.versionString)
  }
}

#Project properties
#Tue Dec 22 16:14:08 CST 2009
project.organization=Cough
project.name=ForkFail
sbt.version=0.6.8
project.version=1.0
def.scala.version=2.7.7
build.scala.versions=2.8.0.Beta1-RC5
project.initialize=false


And here is the error that I get when fork is uncommented. Unfortunately, it didnt print the scala version, instead had an error:

dhcp-129-105-244-105:tmp jdc974$ xsbt run
[info] Recompiling project definition...
[info]       Source analysis: 1 new/modified, 0 indirectly invalidated, 0 removed.
[info] Building project ForkFail 1.0 against Scala 2.8.0.Beta1-RC5
[info]    using ForkFailProject with sbt 0.6.8 and Scala 2.7.7
[info]
[info] == compile ==
[info]   Source analysis: 0 new/modified, 0 indirectly invalidated, 0 removed.
[info] Compiling main sources...
[info] Nothing to compile.
[info]   Post-analysis: 2 classes.
[info] == compile ==
[info]
[info] == copy-resources ==
[info] == copy-resources ==
[info]
[info] == run ==
[error] java.lang.NoClassDefFoundError: scala/util/PropertiesTrait
[error]     at ForkFail.main(ForkFail.scala)
[error]     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[error]     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
[error]     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
[error]     at java.lang.reflect.Method.invoke(Method.java:597)
[error]     at scala.tools.nsc.ObjectRunner$$anonfun$run$1.apply(ObjectRunner.scala:75)
[error]     at scala.tools.nsc.ObjectRunner$.withContextClassLoader(ObjectRunner.scala:49)
[error]     at scala.tools.nsc.ObjectRunner$.run(ObjectRunner.scala:74)
[error]     at scala.tools.nsc.MainGenericRunner$.main(MainGenericRunner.scala:154)
[error]     at scala.tools.nsc.MainGenericRunner.main(MainGenericRunner.scala)
[error] Caused by: java.lang.ClassNotFoundException: scala.util.PropertiesTrait
[error]     at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
[error]     at java.security.AccessController.doPrivileged(Native Method)
[error]     at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
[error]     at java.lang.ClassLoader.loadClass(ClassLoader.java:315)
[error]     at java.lang.ClassLoader.loadClass(ClassLoader.java:250)
[error]     at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:398)
 

[Mark Harrah]

Thanks Josh. You can use:

override def fork =
{
val si = buildScalaInstance
Some(new ForkScalaRun {
override def scalaJars = si.libraryJar :: si.compilerJar :: Nil})
}

until I make ForkScalaRun use the build Scala version by default.

-Mark

[Seth Tisue]

>>>>> "Mark" == Mark Harrah <dmha...@gmail.com> writes:

Mark> Thanks Josh. You can use: override def fork = { val si =
Mark> buildScalaInstance Some(new ForkScalaRun { override def scalaJars
Mark> = si.libraryJar :: si.compilerJar :: Nil}) }
Mark> until I make ForkScalaRun use the build Scala version by default.

works, thanks.

--
Seth Tisue @ Northwestern University | http://tisue.net
lead developer, NetLogo: http://ccl.northwestern.edu/netlogo/

[Mark Harrah]

On Wednesday 23 December 2009, Seth Tisue wrote:
> >>>>> "Mark" == Mark Harrah <dmha...@gmail.com> writes:
>
> Mark> Thanks Josh. You can use: override def fork = { val si =
> Mark> buildScalaInstance Some(new ForkScalaRun { override def scalaJars
> Mark> = si.libraryJar :: si.compilerJar :: Nil}) }
> Mark> until I make ForkScalaRun use the build Scala version by default.
>
> works, thanks.

Ok, I couldn't make the old way do this by default and be compatible, so I at
least tried to make the new way better. There are some new methods called
forkRun that either do the above by default or directly accept a new working
directory or arguments:

override def fork = forkRun
override def fork =
forkRun(new File("different-working-directory"))
override def fork =
forkRun("-Xmx8G" :: Nil)

This is in the just published 0.6.9.

-Mark

[Seth Tisue]

>>>>> "Mark" == Mark Harrah <dmha...@gmail.com> writes:

Mark> Ok, I couldn't make the old way do this by default and be
Mark> compatible, so I at least tried to make the new way better.
Mark> There are some new methods called forkRun that either do the
Mark> above by default or directly accept a new working directory or
Mark> arguments: [...]
Mark> This is in the just published 0.6.9.

Works, thanks!