Scala object not found

[timperrett]

Hey hey,

Just tried to add one-jar to extradoc that I forked to see if one could create a binary version negating the need for shell scripts and using the one-jar sbt plugin results in:

λ java -jar extradoc_2.8.0-0.1-SNAPSHOT-onejar.jar error: fatal error: object scala not found. one error found

You see this error when the scala library cannot be properly loaded. Any ideas? I'm unsure if this is a direct issue with the plugin or one-jar itself. There was some funky stuff going on with one-jar which was why I have ditched it at work in favour of Apache Shade.

Cheers, Tim

[timperrett]

Oh btw, the repo is here: https://github.com/timperrett/extradoc/

Just run onejar and try to invoke the output JAR to replicate the issue

[retronym]

The plugin is laying things out as expected, other than for putting extradoc_2.8.0-0.1-SNAPSHOT.jar in both ./lib and ./main.

 ~/code/extradoc[master*]: jar tf ./target/scala_2.8.0/extradoc_2.8.0-0.1-SNAPSHOT-onejar.jar | sort
META-INF/MANIFEST.MF
OneJar.class
boot-manifest.mf
com/simontuffs/onejar/Boot$1.class
com/simontuffs/onejar/Boot$2.class
com/simontuffs/onejar/Boot$3.class
com/simontuffs/onejar/Boot.class
com/simontuffs/onejar/Handler$1.class
com/simontuffs/onejar/Handler.class
com/simontuffs/onejar/IProperties.class
com/simontuffs/onejar/JarClassLoader$1.class
com/simontuffs/onejar/JarClassLoader$2.class
com/simontuffs/onejar/JarClassLoader$ByteCode.class
com/simontuffs/onejar/JarClassLoader$FileURLFactory$1.class
com/simontuffs/onejar/JarClassLoader$FileURLFactory.class
com/simontuffs/onejar/JarClassLoader$IURLFactory.class
com/simontuffs/onejar/JarClassLoader$OneJarURLFactory.class
com/simontuffs/onejar/JarClassLoader.class
com/simontuffs/onejar/OneJarFile$1.class
com/simontuffs/onejar/OneJarFile$2.class
com/simontuffs/onejar/OneJarFile.class
com/simontuffs/onejar/OneJarURLConnection.class
doc/one-jar-license.txt
lib/extradoc_2.8.0-0.1-SNAPSHOT.jar
lib/scala-compiler.jar
lib/scala-library.jar
main/extradoc_2.8.0-0.1-SNAPSHOT.jar

You need to invoke Scalac from extradoc with settings suitable for this One-JAR classloader. This is a similar situation to embedding the REPL in SBT, and Mark Harrah contributed a change to Scala 2.8.1 that makes this possible.

https://gist.github.com/404272 https://lampsvn.epfl.ch/trac/scala/changeset/22949

[timperrett]

Damn, figured this might be the problem - perhaps i'll just drop in a pom for the time being and use shade to make a standalone binary :-) Thanks for the super prompt response!

[retronym]

This might work as an alternative to Shade: https://github.com/codahale/assembly-sbt