Create a single executable file from project

[Tsume]

Hi,

Which SBT plugin should I use to create a single executable (or jar) file from a scala project?

The plugin  should incorporate my dependencies and the jar files in my library.

I found OneJar but there hasn't been an update in awhile.

Thanks in advance.

[Doug Tangren]

Use sbt assembly

https://github.com/sbt/sbt-assembly

Its been one of the most dependable and well maintained plugins I've used.

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[Tsume]

Thanks softprops, it seems to be what I'm looking for. Unfortunately I'm getting an error when  I try to assemble the jar

[error] (*:assembly) scala.MatchError: akka/io/BackpressureBuffer$$anon$11$$anonfun$18.class (of class java.lang.String)

My build.sbt has the following in for the Merge Strategy

mergeStrategy in assembly <<= (mergeStrategy in assembly) { (old) =>

  {

    case "JsonWriteNullProperties.class" => MergeStrategy.last

  }

}

No where in the document does it talk about encountering MatchError's

[Paolo Giarrusso]

On Tuesday, August 27, 2013 12:20:54 AM UTC+2, Tsume wrote:

Thanks softprops, it seems to be what I'm looking for. Unfortunately I'm getting an error when  I try to assemble the jar

[error] (*:assembly) scala.MatchError: akka/io/BackpressureBuffer$$anon$11$$anonfun$18.class (of class java.lang.String)

My build.sbt has the following in for the Merge Strategy

mergeStrategy in assembly <<= (mergeStrategy in assembly) { (old) =>

  {

    case "JsonWriteNullProperties.class" => MergeStrategy.last

  }

}

Your pattern match does not have a default case.

 

No where in the document does it talk about encountering MatchError's

 

MatchError is not sbt-assembly specific, so it shouldn't be documented there. That error is just telling you that old != "JsonWriteNullProperties.class", so the match failed. Please google MatchError for details.

In particular, the error even mentions the value of old, that is "akka/io/BackpressureBuffer$$anon$11$$anonfun$18.class".