Add crashlyticsUpload tasks dependency on the fly - checking if everything is commited to git

gistfile1.groovy

//add it to your build.gradle
//every time when your will call task crashlyticsUploadSomethingSomething it will be called before it 
//and it will crash if you have some uncommited changes in your working copy.
//
//I'm using this because I need git sha1 for app versioning in development versions.

task everythingGitCommited << {

    def checkChanges = 'git status -uno --porcelain'.execute([], project.rootDir).text.trim()

    if(checkChanges) {
        throw new GradleException('Commit or shash your working copy before BETA upload!')
    }
}

tasks.whenTaskAdded { task ->
    if(task.name.startsWith("crashlyticsUpload")) {
        task.dependsOn everythingGitCommited
    }
}