I've got a task property defined like this:

abstract class ChangeModuleVersion : DefaultTask() {
    @Input
    val moduleVersion: Provider<String> = project.objects.property<String>()

and registered like this:

tasks.register<ChangeModuleVersion>("changeModuleVersion")

how do I pass I pass the parameter to the task, because ./gradlew changeModuleVersion -PmoduleVersion=0.0.1 gives me a property 'moduleVersion' doesn't have a configured value.

There are two different things called property (🤷) 1. Property (as an extension of Provider) is what you use to make tasks configurable 2. Gradle Property is the thing you pass via

-P

(it's like a global parameter for the build) In your example, you probably want to connect theses two:

tasks.register<ChangeModuleVersion>("changeModuleVersion") {
    moduleVersion = providers.gradleProperty("moduleVersion")
}

is it recommended to use something else? I have that task as a dependency of a package task so it needs to be available in that context

If you want the

moduleVersion

to be something you configure via command line

-PmoduleVersion=...

is the right way to do it. And then link that to some task as in the snippet I posted. What does the

changeModuleVersion

task do?

it edits a module.json file by replacing the version and download link parameter

And then the "package task" uses that file? Is the

module.json

file a source file in Git?

exactly

It's a special situation. Ideally, a task other tasks depend on has Inputs and Outputs that do not overlap. Modifying a file in place can be done, but then the task can not have Inputs/Outputs in the Gradle sense. The task will never be UP-TO-DATE. It's then probably more correct to define:

@Internal
val moduleVersion: Property<String>

...and not

@Input

(but it makes no difference as long as there is no

@Output...

defined)

thank you