JamesEarlDouglas/xsbt-web-plugin — pull request #123 by cdow (2013-08-27 15:15:15+00:00)
Title: Real fix for #113

Apparently the cause of this issue is that Tomcat checks the System
classloader before it checks any others. Unfortunately, the sbt-
lauch.jar is on the system classloader. It appears to contain a version
of the Scala standard lib that has been run through Proguard. As a
result, it is missing a bunch of methods. To fix this I modified the
Tomcat classloader so it uses the root classloader instead of the system
classloader. This is kind of a hack because Tomcat doesn't provided a
way to do this.