Lazy dependency resolution - completely conditional configuration/dependency?

Old Forum Archive
1

Hi,

I have a task which gets a big zip dependency and extracts it to some directory…

configurations {

bigzip

}

dependencies {

bigzip “org.example.assets:bigzip:${bigZipVersion}@zip”

}

task unpackBigZip(type: Copy, dependsOn: configurations.bigzip) {

ext.targetOutputDir = new File("$buildDir/unpack/bigzip")

outputs.dir targetOutputDir

from {

configurations.bigzip.collect { zipTree(it) }

}

into targetOutputDir

}

As this is only needed occasionally I wanted to make it conditional:

unpackBigZip.onlyIf { project.hasProperty(‘useBigZip’) }

The problem I have is that even the task is not executed (thanks to the “onlyIf” statement), the dependency is still downloaded by gradle…

How can I make it completely conditional? Any hints?

Thank you in advance, Marian

2

One way would be to wrap a conditional around the bigzip dependency declaration or all of it. It might be cleaner to just pull everything bigzip-related out into a secondary script and then only apply it if your conditional is met:

if (project.hasProperty('useBigZip')) {
  apply from: 'bigzip.gradle'
}
3

Why Gradle downloads artefacts before they are really requested? In this case, to download large file before actual task execution seems to be a bug.