Error compiling Ceylon example with Gradle - gradle

Question

Ceylon 1.3.1 has just been released, one of the new items is better integration with Java projects/libraries. Decided to take one of the samples for a spin (https://github.com/DiegoCoronel/ceylon-spring-boot) alongside the ceylon-gradle plugin (https://github.com/renatoathaydes/ceylon-gradle-plugin).
As far as I can tell, turning this project into a multi-project Gradle build is a matter of adding two files with the following configuration.
settings.gradle
include 'gateway'
include 'discovery'
include 'foo'
include 'bar'
include 'foobar'
build.gradle
plugins {
id 'com.athaydes.ceylon' version '1.3.0' apply false
}
subprojects { subprj ->
subprj.apply plugin: 'com.athaydes.ceylon'
repositories {
mavenCentral()
}
ceylon {
module = subprj.name
}
}
Unfortunately building any of the modules results in errors, such as
$ gradle :gateway:compileCeylon
:gateway:resolveCeylonDependencies
:gateway:createDependenciesPoms
:gateway:createMavenRepo
:gateway:generateOverridesFile
:gateway:createModuleDescriptors
:gateway:importJars
:gateway:compileCeylon
source/gateway/module.ceylon:3: error: Pre-resolving of module failed: Could not find module: antlr/2.7.7
import ceylon.interop.java "1.3.0";
^
ceylon compile: There was 1 error
:gateway:compileCeylon FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':gateway:compileCeylon'.
> Ceylon process exited with code 1. See output for details.
This happens using Gradle 3.2
------------------------------------------------------------
Gradle 3.2
------------------------------------------------------------
Build time: 2016-11-14 12:32:59 UTC
Revision: 5d11ba7bc3d79aa2fbe7c30a022766f4532bbe0f
Groovy: 2.4.7
Ant: Apache Ant(TM) version 1.9.6 compiled on June 29 2015
JVM: 1.8.0_112 (Oracle Corporation 25.112-b16)
OS: Mac OS X 10.10.5 x86_64
Tried setting additional properties on the ceylon configuration as explained in the plugin's documentation, such as
ceylon {
flatClasspath = false
importJars = true
forceImports = true
}
However the error persists. Any pointers on what I may be missing would be greatly appreciated.

Answer 1

This is because ceylon gradle plugin does not support yet the new feature --fully-export-maven-dependencies ... I created the issue now ;), so to make your project work you probably need to change each subproject/.ceylon/config with these options:
[compiler]
source=source
resource=resource
[defaults]
encoding=UTF-8
overrides=build/overrides.xml
flatclasspath=true
fullyexportmavendependencies=false
It will disable the new ceylon feature and uses ceylon gradle plugin feature and the generated overrides.xml file