Skip non-external dependency declarations in POM

Author: mannodermaus

deployment.gradle

@@ -83,12 +83,15 @@ publishing {
         // Include transitive dependencies
         withXml {
           def dependenciesNode = asNode().appendNode("dependencies")
-          project.configurations.implementation.allDependencies.each {
-            def dependencyNode = dependenciesNode.appendNode("dependency")
-            dependencyNode.appendNode("groupId", it.group)
-            dependencyNode.appendNode("artifactId", it.name)
-            dependencyNode.appendNode("version", it.version)
-          }
+          project.configurations.implementation
+                  .allDependencies
+                  .findAll { it.name != "unspecified" }
+                  .each {
+                    def dependencyNode = dependenciesNode.appendNode("dependency")
+                    dependencyNode.appendNode("groupId", it.group)
+                    dependencyNode.appendNode("artifactId", it.name)
+                    dependencyNode.appendNode("version", it.version)
+                  }
         }
       }
     }