Possible to weave scala-library.jar?

[colin-scott]

I'm attempting to add before advice to a function within scala-library.jar.

It appears that the sbt-aspectj plugin is successfully weaving the jar. However, the weaved jar is somehow not getting loaded, despite the fullClasspath in Runtime <<= useInstrumentedClasses(Runtime) line in my build file.

For what it's worth, here is my build file, my aspectj file, and my test program.

To reproduce:

git clone -b test-ask [email protected]:NetSys/sts2-applications.git test-ask
cd test-ask
sbt debug run

Running it should print "WOOHOO" at the beginning. However, no such message appears.

Interestingly, the weaved classes are on the classpath. Moreover, as far as I can tell, there are no redundant classes on the classpath, i.e. there is one and only one of the class I'm trying to weave on the classpath.

I suspect that the scala runtime somehow loads its own scala-library, dynamically and without regard to the classpath.. Any insights?

Thanks!