How can I exclude from Gradle dependency lists after the fact? - gradle

Question

This is for a Maven-to-Gradle build conversion on a large build. Think Rodan, Ghidora, Godzilla, etc. Yeah. That big.
Given a dependency that looks like this:
ext.jbossBom = [ ... ]// This is in the root project.
compile (rootProject.ext.jbossBom) //This is not in the root project
How can I exclude items from the above? I've tried variants of:
compile (rootProject.ext.jbossBom) {
exclude group: "some.group", module: "some.module"
}

Answer 1

jbossBom is a collection. Remove the element your want to eliminate:
compile (rootProject.ext.jbossBom.findAll{ !it.startsWith('some.group')})
To exclude a certain transitive dependency globally(irrespective of which dependency brings it in), you can do:
configurations {
compile.exclude group: 'commons-math3', module: 'commons-math3'
compile.exclude group: 'commons-pool2', module: 'commons-pool2'
}
To exclude a specific transitive dependency from each of the contents of jbossBom, you can do:
dependencies{
jbossBom.each{
compile (it){exclude group:'foo', module:'bar'}
}
}