Nobody though of projects that are independently developed but also

included as subprojects?

build.gradle

@@ -23,9 +23,11 @@ dependencies {
     compile 'commons-io:commons-io:2.5'
 }
 
-wrapper {
-    distributionType Wrapper.DistributionType.ALL
-    gradleVersion '4.8.1'
+if (project == getRootProject()) {
+    wrapper {
+        distributionType Wrapper.DistributionType.ALL
+        gradleVersion '4.8.1'
+    }
 }
 
 idea {