IdeaProject

import org.gradle.plugins.ide.idea.model.*

plugins {
    id 'java'
    id 'idea'
}

idea {
  project {
    //if you want to set specific jdk and language level
    jdkName = '1.6'
    languageLevel = '1.5'

    //you can update the source wildcards
    wildcards += '!?*.ruby'

    //you can configure the VCS used by the project
    vcs = 'Git'

    //you can change the modules of the *.ipr
    //modules = project(':some-project').idea.module

    //you can change the output file
    outputFile = new File(outputFile.parentFile, 'someBetterName.ipr')

    //you can add project-level libraries
    projectLibraries << new ProjectLibrary(name: "my-library", classes: [new File("path/to/library")])
  }
}

plugins {
    id 'java'
    id 'idea'
}

idea {
  project {
    ipr {
      //you can tinker with the output *.ipr file before it's written out
      withXml {
        def node = it.asNode()
        node.appendNode('iLove', 'tinkering with the output *.ipr file!')
      }

      //closure executed after *.ipr content is loaded from existing file
      //but before gradle build information is merged
      beforeMerged { project ->
        //you can tinker with Project
      }

      //closure executed after *.ipr content is loaded from existing file
      //and after gradle build information is merged
      whenMerged { project ->
        //you can tinker with Project
      }
    }
  }
}