How fix IntelliJ Idea plugin "missing package prefix" error?

[KajMagnus]

Hi

I'm telling sbt-idea to generate IntelliJ Idea projects after having added new dependencies to my main project.

There's a sub project, debiki-dao-pgsql, that causes a "missing package prefix" (see below) error that I haven't experienced before.

Does anyone know what the problem might be?

(What package prefix is sbt-idea referring to? Here I found a perhaps related

sbt-idea plugin issue:  https://github.com/mpeltonen/sbt-idea/pull/159

but I don't have any  source directory entries in module XML files,  as far as I know)

Details below.

Best regards,

KajMagnus

PS. I hope this is the "correct" mailing list? I didn't find any mailing list here: https://github.com/mpeltonen/sbt-idea

sbt.version=0.12.1

[debiki-app-play] $ idea

[info] Trying to create an Idea module debiki-app-play

[info] Trying to create an Idea module debiki-dao-pgsql

[error] missing package prefix

[error] java.lang.IllegalArgumentException

[error] Use 'last' for the full log.

[debiki-app-play] $ last

[info] Trying to create an Idea module debiki-app-play

[debug] Running task... Cancelable: false, check cycles: false

[debug] Running task... Cancelable: false, check cycles: false

[debug] Other repositories:

[debug] Default repositories:

[debug]         Raw(ProjectResolver(inter-project, mapped: ))

[debug]         FileRepository(local,FileConfiguration(true,None),sbt.Patterns@19bf8a6)

[debug]         Scala-Tools Maven2 Repository: http://scala-tools.org/repo-releases

[debug]         public: http://repo1.maven.org/maven2/

[debug] Using inline dependencies specified in Scala.

[debug] post 1.3 ivy file: using exact as default matcher

[debug] Other repositories:

[debug] Default repositories:

[debug]         Raw(ProjectResolver(inter-project, mapped: com.debiki#debiki-core_2.10;0.0.2-SNAPSHOT))

[debug]         FileRepository(local,FileConfiguration(true,None),sbt.Patterns@7d59869b)

[debug]         public: http://repo1.maven.org/maven2/

[debug] Using inline dependencies specified in Scala.

[debug] post 1.3 ivy file: using exact as default matcher

[debug] Other repositories:

[debug] Default repositories:

[debug]         Raw(ProjectResolver(inter-project, mapped: com.debiki#debiki-core_2.10;0.0.2-SNAPSHOT, com.debiki#debiki-tck-dao_2.10;0.0.2-SNAPSHOT))

[debug]         FileRepository(local,FileConfiguration(true,None),sbt.Patterns@59226733)

[debug]         public: http://repo1.maven.org/maven2/

[debug] Using inline dependencies specified in Scala.

[debug] Running task... Cancelable: false, check cycles: false

[debug] Other repositories:

[debug] Default repositories:

[debug]         Raw(ProjectResolver(inter-project, mapped: ))

[debug]         FileRepository(local,FileConfiguration(true,None),sbt.Patterns@68903261)

[debug]         Scala-Tools Maven2 Repository: http://scala-tools.org/repo-releases

[debug]         public: http://repo1.maven.org/maven2/

[debug] Using inline dependencies specified in Scala.

[debug] post 1.3 ivy file: using exact as default matcher

[debug] Other repositories:

[debug] Default repositories:

[debug]         Raw(ProjectResolver(inter-project, mapped: com.debiki#debiki-core_2.10;0.0.2-SNAPSHOT))

[debug]         FileRepository(local,FileConfiguration(true,None),sbt.Patterns@328f0c95)

[debug]         public: http://repo1.maven.org/maven2/

[debug] Using inline dependencies specified in Scala.

[debug] post 1.3 ivy file: using exact as default matcher

[debug] Other repositories:

[debug] Default repositories:

[debug]         Raw(ProjectResolver(inter-project, mapped: com.debiki#debiki-core_2.10;0.0.2-SNAPSHOT, com.debiki#debiki-tck-dao_2.10;0.0.2-SNAPSHOT))

[debug]         FileRepository(local,FileConfiguration(true,None),sbt.Patterns@3e98613b)

[debug]         public: http://repo1.maven.org/maven2/

[debug] Using inline dependencies specified in Scala.

[debug] Running task... Cancelable: false, check cycles: false

[debug] Other repositories:

[debug] Default repositories:

[debug]         Raw(ProjectResolver(inter-project, mapped: ))

[debug]         FileRepository(local,FileConfiguration(true,None),sbt.Patterns@728aed09)

[debug]         Scala-Tools Maven2 Repository: http://scala-tools.org/repo-releases

[debug]         public: http://repo1.maven.org/maven2/

[debug] Using inline dependencies specified in Scala.

[debug] post 1.3 ivy file: using exact as default matcher

[debug] Other repositories:

[debug] Default repositories:

[debug]         Raw(ProjectResolver(inter-project, mapped: com.debiki#debiki-core_2.10;0.0.2-SNAPSHOT))

[debug]         FileRepository(local,FileConfiguration(true,None),sbt.Patterns@23cd4638)

[debug]         public: http://repo1.maven.org/maven2/

[debug] Using inline dependencies specified in Scala.

[debug] post 1.3 ivy file: using exact as default matcher

[debug] Other repositories:

[debug] Default repositories:

[debug]         Raw(ProjectResolver(inter-project, mapped: com.debiki#debiki-core_2.10;0.0.2-SNAPSHOT, com.debiki#debiki-tck-dao_2.10;0.0.2-SNAPSHOT))

[debug]         FileRepository(local,FileConfiguration(true,None),sbt.Patterns@114379f5)

[debug]         public: http://repo1.maven.org/maven2/

[debug] Using inline dependencies specified in Scala.

[debug] Running task... Cancelable: false, check cycles: false

[debug] Running task... Cancelable: false, check cycles: false

[debug] Running task... Cancelable: false, check cycles: false

[info] Trying to create an Idea module debiki-dao-pgsql

[debug] Running task... Cancelable: false, check cycles: false

[error] missing package prefix

java.lang.IllegalArgumentException

        at com.typesafe.sbtidea.SbtIdeaPlugin$.logErrorAndFail$1(SbtIdeaPlugin.scala:169)

        at com.typesafe.sbtidea.SbtIdeaPlugin$$anonfun$setting$1$1.apply(SbtIdeaPlugin.scala:174)

        at com.typesafe.sbtidea.SbtIdeaPlugin$$anonfun$setting$1$1.apply(SbtIdeaPlugin.scala:174)

        at scala.Option.getOrElse(Option.scala:108)

        at com.typesafe.sbtidea.SbtIdeaPlugin$.setting$1(SbtIdeaPlugin.scala:173)

        at com.typesafe.sbtidea.SbtIdeaPlugin$.projectData(SbtIdeaPlugin.scala:245)

        at com.typesafe.sbtidea.SbtIdeaPlugin$$anonfun$15.apply(SbtIdeaPlugin.scala:99)

        at com.typesafe.sbtidea.SbtIdeaPlugin$$anonfun$15.apply(SbtIdeaPlugin.scala:98)

        at scala.collection.TraversableLike$$anonfun$collect$1.apply(TraversableLike.scala:266)

        at scala.collection.immutable.HashMap$HashMap1.foreach(HashMap.scala:178)

        at scala.collection.immutable.HashMap$HashTrieMap.foreach(HashMap.scala:347)

        at scala.collection.immutable.HashMap$HashTrieMap.foreach(HashMap.scala:347)

        at scala.collection.TraversableLike$class.collect(TraversableLike.scala:266)

        at scala.collection.immutable.HashMap.collect(HashMap.scala:38)

        at com.typesafe.sbtidea.SbtIdeaPlugin$.doCommand(SbtIdeaPlugin.scala:98)

        at com.typesafe.sbtidea.SbtIdeaPlugin$$anonfun$ideaCommand$2.apply(SbtIdeaPlugin.scala:53)

        at com.typesafe.sbtidea.SbtIdeaPlugin$$anonfun$ideaCommand$2.apply(SbtIdeaPlugin.scala:53)

        at sbt.Command$$anonfun$applyEffect$1$$anonfun$apply$2.apply(Command.scala:60)

        at sbt.Command$$anonfun$applyEffect$1$$anonfun$apply$2.apply(Command.scala:60)

        at sbt.Command$$anonfun$applyEffect$2$$anonfun$apply$3.apply(Command.scala:62)

        at sbt.Command$$anonfun$applyEffect$2$$anonfun$apply$3.apply(Command.scala:62)

        at sbt.Command$.process(Command.scala:90)

        at sbt.MainLoop$$anonfun$next$1$$anonfun$apply$1.apply(MainLoop.scala:71)

        at sbt.MainLoop$$anonfun$next$1$$anonfun$apply$1.apply(MainLoop.scala:71)

        at sbt.State$$anon$2.process(State.scala:170)

        at sbt.MainLoop$$anonfun$next$1.apply(MainLoop.scala:71)

        at sbt.MainLoop$$anonfun$next$1.apply(MainLoop.scala:71)

        at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:18)

        at sbt.MainLoop$.next(MainLoop.scala:71)

        at sbt.MainLoop$.run(MainLoop.scala:64)

        at sbt.MainLoop$$anonfun$runWithNewLog$1.apply(MainLoop.scala:53)

        at sbt.MainLoop$$anonfun$runWithNewLog$1.apply(MainLoop.scala:50)

        at sbt.Using.apply(Using.scala:25)

        at sbt.MainLoop$.runWithNewLog(MainLoop.scala:50)

        at sbt.MainLoop$.runAndClearLast(MainLoop.scala:33)

        at sbt.MainLoop$.runLoggedLoop(MainLoop.scala:17)

        at sbt.MainLoop$.runLogged(MainLoop.scala:13)

        at sbt.xMain.run(Main.scala:26)

        at xsbt.boot.Launch$.run(Launch.scala:55)

        at xsbt.boot.Launch$$anonfun$explicit$1.apply(Launch.scala:45)

        at xsbt.boot.Launch$.launch(Launch.scala:69)

        at xsbt.boot.Launch$.apply(Launch.scala:16)

        at xsbt.boot.Boot$.runImpl(Boot.scala:31)

        at xsbt.boot.Boot$.main(Boot.scala:20)

        at xsbt.boot.Boot.main(Boot.scala)

[error] java.lang.IllegalArgumentException

[error] Use 'last' for the full log.

[KajMagnus]

Hi again! Now everything works. I added this line:

ideaPackagePrefix := None

to `build.sbt` in my three *sub* projects (located in  modules/<subproject-name>/build.sbt ). But not to the main project.

(I downloaded the sbt-idea source code repo and searched for the "missing package prefix" error message, and eventually found out what to do.)

Weird config option :-)

Best regards, KajMagnus