fix jar generation of derived projects

build.gradle

@@ -29,15 +29,38 @@ sourceSets {
     }
 }
 
+def versionFile = 'src/main/resources/preprocessor.properties'
+def versionProps = new Properties()
+
+try {
+    file(versionFile).withInputStream { stream -> versionProps.load(stream) }
+    version = versionProps['version']
+} catch (e) {
+    // this happens, if either the properties file is not present, or cannot be read from
+    throw new GradleException("File ${versionFile} not found or unreadable. Aborting.", e)
+}
+
+task fatJar(type: Jar) {
+    group = "build"
+    archiveAppendix = "fatjar"
+    from sourceSets.main.output
+    from {
+        configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it) }
+    }
+    manifest {
+        attributes "Main-Class": "${mainClassName}"
+    }
+}
+
 task modelJar(type: Jar) {
     group = "build"
-    archiveBaseName = 'model'
-    archiveVersion = ''
+    archiveAppendix = "model"
     from sourceSets.model.output
 }
 
 artifacts {
     archives modelJar
+    archives fatJar
 }
 
 dependencies {
@@ -64,25 +87,8 @@ dependencies {
     testFixturesApi group: 'commons-io', name: 'commons-io', version: '2.8.0'
 }
 
-def versionFile = 'src/main/resources/preprocessor.properties'
-def versionProps = new Properties()
-
-try {
-    file(versionFile).withInputStream { stream -> versionProps.load(stream) }
-    version = versionProps['version']
-} catch (e) {
-    // this happens, if either the properties file is not present, or cannot be read from
-    throw new GradleException("File ${versionFile} not found or unreadable. Aborting.", e)
-}
-
 jar {
-    manifest {
-        attributes "Main-Class": "${mainClassName}"
-    }
-
-    from {
-        configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it) }
-    }
+    archiveAppendix = "base"
 }
 
 test {