Extensions Arrays are imutable

[StefMa]

In a project I want to use this plugin.
Unfortunately I can't set/change the licences from their extension in a expected way.

This is the extension from the plugin.
As you see. licenses have a default value:
String[] licences = ['Apache-2.0']

Expected Behavior

In the Groovy DLS I use the following code:

publish {
//... Other code - ignore me
    licences = ["MIT"]
}

With that code the license array will be overwritten and it works.

I expect that I can set the licenses in kotlin similar to groovy:

publish {
//... Other code - ignore me
    licences = arrayOf("MIT")
}

Current Behavior

If I use the same code in the Kotlin-DSL I get the error:

I can't workaround it somehow. First I thought I can use

licences.toMutableList().add("MIT")

but since the toMutableList() will return a new list I have to set the new list (which I have to convert to array first of course) to the licenses field of the extension. But since it is immutable I can't set it 😞

Context

N/A

Steps to Reproduce (for bugs)

You could create a new project and add the following code:
settings.gradle

pluginManagement {
    repositories {
        gradlePluginPortal()
    }
    resolutionStrategy {
        eachPlugin {
            if (requested.id.id == "com.novoda.bintray-release") {
                useModule("com.novoda:bintray-release:${requested.version}")
            }
        }
    }
}

build.gradle.kts

plugins {
    id("java-library")
    id("com.novoda.bintray-release") version "0.8.0"
}

publish {
    userOrg = "anyOrg"
    groupId = "aGroupdId"
    artifactId = "artifactId"
    uploadName = "name"
    version = "AVersion"
    description = "A descritpion"
    website = "https://github.com/gradle/kotlin-dsl"
    licences = arrayOf("MIT")
}

Your Environment

• Build scan URL:
  I think a build scan make no sense here

[mkobit]

Current workaround is to call the setter that uses varargs -> setLicenses("MIT")

[StefMa]

@mkobit hmm, I don't know what do you mean.
According to my build.script there is no setLicenses:

Update:

Ok, it's just appear:

[eskatos]

That's causes by Groovy generating a property setter that takes a vararg for an array.
Plugin types should prefer collections.

Also note that #380 could help here.

Closing as answered