Old Gradle configuration bug back again in Gradle4

I have a clean install of Gradle 4.10.1

Gradle 4.10.1

Build time:   2018-09-12 11:33:27 UTC
Revision:     76c9179ea9bddc32810f9125ad97c3315c544919

Kotlin DSL:   1.0-rc-6
Kotlin:       1.2.61
Groovy:       2.4.15
Ant:          Apache Ant(TM) version 1.9.11 compiled on March 23 2018
JVM:          10.0.2 ("Oracle Corporation" 10.0.2+13)
OS:           Windows 10 10.0 amd64

I have a structure of

/settings.gradle =

include ':subproject'
include ':subproject:subsub'

/build.gradle =

apply plugin : 'java'

allprojects {

    apply plugin: 'java'

    repositories {


/subproject/build.gradle =

configurations {

dependencies {
    java project( path: 'subsub', configuration: 'compile' )

/subproject/subsub/build.gradle is empty

executing gradle results in

FAILURE: Build failed with an exception.

* Where:
Build file '...\subproject\build.gradle' line: 6

* What went wrong:
A problem occurred evaluating project ':subproject'.
> Could not find method java() for arguments [DefaultProjectDependency{dependencyProject='project ':subproject:subsub'', configuration='compile'}] on object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org


This seems to be a similar failure as Could not find method compile() for arguments
however the suggestion here is that the configuration is not available as it’s created in the plugin and yet my example here explicitly creates the java configuration so surely should be available already?

by changing /subproject/build.gradle to:

configurations {
dependencies {
    javabob project( path: 'subsub', configuration: 'compile' )

calling gradle doesn’t result in the previous error, if there’s an issue with creating a configuration with the name java then the error should indicate that an illegal configuration name has been used. If this is the case is there a list of names that cannot be used for configurations?

java is an extension in Gradle 4.10, so you can’t name a Configuration the same.

As I suspected, hence the reason I said the error message should indicate that, it’s good to know for sure though thank you.