diff --git a/gradle/build.gradle b/gradle/build.gradle
index 3f1c7df1e..4ec958b21 100644
--- a/gradle/build.gradle
+++ b/gradle/build.gradle
@@ -36,43 +36,65 @@ subprojects {
       // TODO(weiminyu): enable more dependency checks
   ]
 
+  if (project.name == 'third_party') return
+
   // Path to code generated with annotation processors. Note that this path is
   // chosen by the 'net.ltgt.apt' plugin, and may change if IDE-specific plugins
   // are applied, e.g., 'idea' or 'eclipse'
   def aptGeneratedDir = "${project.buildDir}/generated/source/apt/main"
   def aptGeneratedTestDir = "${project.buildDir}/generated/source/apt/test"
 
-  if (project.name != 'third_party') {
-    sourceSets {
-      main {
-        java {
-          srcDirs = [
-              project(':').javaDir,
-              aptGeneratedDir
-          ]
-          exclude 'com/'
-        }
-        resources {
-          srcDirs = [
-              project(':').javaDir
-          ]
-          exclude 'com/', '**/*.java', '**/BUILD'
-        }
+  def commonlyExcludedResources = ['**/*.java', '**/BUILD']
+
+  sourceSets {
+    main {
+      java {
+        srcDirs = [
+            project(':').javaDir,
+            aptGeneratedDir
+        ]
       }
-      test {
-        java {
-          srcDirs = [
-              project(':').javatestsDir,
-              aptGeneratedTestDir
-          ]
-        }
-        resources {
-          srcDirs = [
-              project(':').javatestsDir,
-          ]
-          exclude '**/*.java', '**/BUILD'
-        }
+      resources {
+        srcDirs = [
+            project(':').javaDir
+        ]
+        exclude commonlyExcludedResources
+      }
+    }
+    test {
+      java {
+        srcDirs = [
+            project(':').javatestsDir,
+            aptGeneratedTestDir
+        ]
+      }
+      resources {
+        srcDirs = [
+            project(':').javatestsDir,
+        ]
+        exclude commonlyExcludedResources
       }
     }
   }
+
+  if (project.name == 'core') return
+
+  def relativePath = "google/registry/${project.name}/"
+
+  sourceSets.each {
+    it.java {
+      include relativePath
+    }
+    it.resources {
+      include relativePath
+    }
+  }
+  project(':core').sourceSets.each {
+    it.java {
+      exclude relativePath
+    }
+    it.resources {
+      exclude relativePath
+    }
+  }
 }
diff --git a/gradle/core/build.gradle b/gradle/core/build.gradle
index 6fb06cba8..969ddd5dd 100644
--- a/gradle/core/build.gradle
+++ b/gradle/core/build.gradle
@@ -145,7 +145,6 @@ dependencies {
   compile 'com.google.template:soy:2018-03-14'
   maybeRuntime 'com.googlecode.charts4j:charts4j:1.3'
   compile 'com.googlecode.json-simple:json-simple:1.1.1'
-  compile 'com.ibm.icu:icu4j:57.1'
   compile 'com.jcraft:jsch:0.1.53'
   maybeRuntime 'com.jcraft:jzlib:1.1.3'
   maybeRuntime 'com.squareup:javapoet:1.8.0'
@@ -216,11 +215,17 @@ dependencies {
   maybeRuntime 'org.tukaani:xz:1.5'
   maybeRuntime 'org.xerial.snappy:snappy-java:1.1.4-M3'
   compile 'org.yaml:snakeyaml:1.17'
+  maybeRuntime 'org.mortbay.jetty:jetty-util:6.1.26'
+  maybeRuntime 'org.slf4j:slf4j-api:1.7.16'
+  maybeRuntime 'org.tukaani:xz:1.5'
+  maybeRuntime 'org.xerial.snappy:snappy-java:1.1.4-M3'
+  testCompile 'org.yaml:snakeyaml:1.17'
   compile 'xerces:xmlParserAPIs:2.6.2'
   compile 'xpp3:xpp3:1.1.4c'
 
   // Known issue: nebula-lint misses inherited dependency.
   compile project(':third_party')
+  compile project(':util')
 
   // Include auto-value in compile until nebula-lint understands
   // annotationProcessor
@@ -232,9 +237,7 @@ dependencies {
   annotationProcessor 'com.google.dagger:dagger-compiler:2.15'
   testAnnotationProcessor 'com.google.dagger:dagger-compiler:2.15'
 
-  // Use compile to work around nebula bug. This should be testCompile.
-  compile 'com.google.appengine:appengine-testing:1.9.58'
-
+  testCompile 'com.google.appengine:appengine-testing:1.9.58'
   testCompile 'com.google.guava:guava-testlib:25.0-jre'
   testCompile 'com.google.monitoring-client:contrib:1.0.4'
   testCompile 'com.google.truth:truth:0.42'
@@ -406,6 +409,17 @@ compileJava.dependsOn soyToJava
 stylesheetsToJavascript.dependsOn processResources
 classes.dependsOn stylesheetsToJavascript
 
+// Make testing artifacts available to be depended up on by other projects.
+// TODO: factor out google.registry.testing to be a separate project.
+task testJar(type: Jar) {
+  classifier = 'test'
+  from sourceSets.test.output
+}
+
+artifacts {
+  testRuntime testJar
+}
+
 task fragileTest(type: Test) {
   // Common exclude pattern. See README in parent directory for explanation.
   exclude "**/*TestCase.*", "**/*TestSuite.*"
diff --git a/gradle/settings.gradle b/gradle/settings.gradle
index 3a9c6015f..3f02f24e4 100644
--- a/gradle/settings.gradle
+++ b/gradle/settings.gradle
@@ -1,5 +1,6 @@
 rootProject.name = 'nomulus'
 
-include 'third_party'
 include 'core'
+include 'third_party'
+include 'util'
 
diff --git a/gradle/util/build.gradle b/gradle/util/build.gradle
new file mode 100644
index 000000000..2151600bc
--- /dev/null
+++ b/gradle/util/build.gradle
@@ -0,0 +1,29 @@
+dependencies {
+  compile 'com.google.appengine:appengine-api-1.0-sdk:1.9.48'
+  compile 'com.google.appengine:appengine-testing:1.9.58'
+  compile 'com.google.code.findbugs:jsr305:3.0.2'
+  compile 'com.google.dagger:dagger:2.15'
+  compile 'com.google.flogger:flogger:0.1'
+  compile 'com.google.guava:guava-jdk5:17.0'
+  compile 'com.google.guava:guava:25.1-jre'
+  compile 'com.google.re2j:re2j:1.1'
+  compile 'com.ibm.icu:icu4j:57.1'
+  compile 'javax.inject:javax.inject:1'
+  compile 'javax.mail:mail:1.4'
+  compile 'javax.xml.bind:jaxb-api:2.3.0'
+  compile 'joda-time:joda-time:2.9.2'
+  compile 'nomulus:util:1.0'
+  compile 'org.yaml:snakeyaml:1.17'
+  testCompile 'com.google.appengine:appengine-api-stubs:1.9.48'
+  testCompile 'com.google.guava:guava-testlib:25.0-jre'
+  testCompile 'com.google.truth:truth:0.42'
+  testCompile 'junit:junit:4.12'
+  testCompile 'org.hamcrest:hamcrest-all:1.3'
+  testCompile 'org.hamcrest:hamcrest-core:1.3'
+  testCompile 'org.mockito:mockito-all:1.9.5'
+  testCompile files("${rootDir}/../third_party/objectify/v4_1/objectify-4.1.3.jar")
+  testCompile project(':third_party')
+  testCompile project(path: ':core', configuration: 'testRuntime')
+  annotationProcessor 'com.google.dagger:dagger-compiler:2.15'
+  testAnnotationProcessor 'com.google.dagger:dagger-compiler:2.15'
+}