I've read somewhere that the minimum jar set for execution with a precompiled .pkg is just
   drools-api-5.1.0.M2.jar
   drools-core-5.1.0.M2.jar

However, trying to run an application with just a .pkg file, this jar set results in the stack
dump shown below, due to a missing "org.mvel2..." class. Adding lib/mvel2-2.0.16.jar to the
CLASSPATH fixes this, but (for reasons I don't care to elaborate here) be we can't have this
in our application.

Can this .jar be avoided?

Note: I'm not using mvel, and the .drl file begins with "package movie; dialect "java".

-W

Exception in thread "main" java.lang.NoClassDefFoundError: org/mvel2/integration/impl/MapVariableResolverFactory
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:632)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:277)
    at java.net.URLClassLoader.access$000(URLClassLoader.java:73)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:212)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:319)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:264)
    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:332)
    at java.lang.Class.getDeclaredFields0(Native Method)
    at java.lang.Class.privateGetDeclaredFields(Class.java:2308)
    at java.lang.Class.getDeclaredField(Class.java:1897)
    at java.io.ObjectStreamClass.getDeclaredSUID(ObjectStreamClass.java:1627)
    at java.io.ObjectStreamClass.access$700(ObjectStreamClass.java:69)
    at java.io.ObjectStreamClass$2.run(ObjectStreamClass.java:442)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.io.ObjectStreamClass.<init>(ObjectStreamClass.java:430)
    at java.io.ObjectStreamClass.lookup(ObjectStreamClass.java:327)
    at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:564)
    at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1600)
    at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1513)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1749)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1346)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:368)
    at java.util.HashMap.readObject(HashMap.java:1047)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:616)
    at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:991)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1865)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1770)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1346)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:368)
    at org.drools.rule.DialectRuntimeRegistry.readExternal(DialectRuntimeRegistry.java:41)
    at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1809)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1768)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1346)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:368)
    at org.drools.rule.Package.readExternal(Package.java:198)
    at org.drools.definitions.impl.KnowledgePackageImp.readExternal(KnowledgePackageImp.java:99)
    at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1809)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1768)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1346)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:368)
    at java.util.ArrayList.readObject(ArrayList.java:696)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:616)
    at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:991)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1865)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1770)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1346)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:368)
    at movie.Main.init(Main.java:40)
    at movie.Main.main(Main.java:89)
Caused by: java.lang.ClassNotFoundException: org.mvel2.integration.impl.MapVariableResolverFactory
    at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:319)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:264)
    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:332)
    ... 60 more