How to specify IntelliJ Exclude Directories using Gradle?

Question

Using IntelliJ to open a build.gradle file, in the "Import Project from Gradle" window, the "Excluded Roots" are pre-populated with the .gradle and build directories.

How do I specify what directories should be excluded (or not excluded) in the build.gradle file?

Specifically I am using a protocol buffer plugin that places generated sources in the /build/generated-sources/ directory. If the build directory is excluded then my source class do not see the generated classes.

Details: IntelliJ 12.1.3, Gradle 1.4

Answer 1

As shown in the Gradle Build Language Reference, you can configure the idea.module.excludeDirs property, which is of type List<File>. Apparently IDEA doesn't support including subdirectories of excluded directories, so you'll have to exclude all siblings of build/generated-sources. For example:

idea {     module {         excludeDirs = [file(".gradle")]         ["classes", "docs", "dependency-cache", "libs", "reports", "resources", "test-results", "tmp"].each {             excludeDirs << file("$buildDir/$it")         }     } } 

If supported by the Protocol Buffer plugin, it may be easier to put the generated sources into a place outside build, and make that place known to the clean task (e.g. clean.delete "generated-sources").