downloadClient: Cannot cast object 'true' with class 'Boolean' to class 'Property'

[wingsofovnia]

I am trying to enable client downloading as per docs:

// build.gradle
helm {
    downloadClient {
        enabled = true
        version = '3.2.0'
    }
}

However, this is what I get on Gradle 6.6:

Caused by: org.codehaus.groovy.runtime.typehandling.GroovyCastException: Cannot cast object 'true' with class 'java.lang.Boolean' to class 'org.gradle.api.provider.Property'

However, Kotlin syntax works:

helm {
    downloadClient {
        enabled.set(true)
        version.set("3.2.0")
    }
}

It is strange because it seems other closures don't have this problem:

helm {
    downloadClient {
        enabled.set(true)
        version.set("3.2.0")
    }
    // works as expected
    lint {
        strict = true
    }
}

[tkrullmann]

Interesting. One difference is that many of the other blocks are instantiated by ObjectFactory.newInstance, while the downloadClient is just a POJO owned by the HelmExtension directly. I always thought the Groovy syntactic sugar for setting properties was something that Gradle makes generally available, not just for objects instantiated via ObjectFactory. Will investigate!