How to define Gradle's home in IDEA?

I am trying to import a Gradle project into IntelliJ, and when I get to the Gradle Home textbox, it is not automatically populated, nor will typing in the path of Gradle Home result in a valid location - I have the GRADLE_USER_HOME environment variable set (to what I think is!) the correct path, and I have been able to successfully import this same project into Eclipse. Any suggestions?

You can write a simple gradle script to print your GRADLE_HOME directory.

task getHomeDir {
    doLast {
        println gradle.gradleHomeDir
    }
}

and name it build.gradle.

Then run it with:

gradle getHomeDir

If you installed with homebrew, use brew info gradle to find the base path (i.e. /usr/local/Cellar/gradle/1.10/), and just append libexec.

The same task in Kotlin in case you use build.gradle.kts:

tasks.register("getHomeDir") {
    println("Gradle home dir: ${gradle.gradleHomeDir}")
}

Installed on a Mac via Homebrew, the path

/usr/local/opt/gradle/libexec

is preferable to

/usr/local/Cellar/gradle/X.X/libexec

since the former will survive version upgrades.