eat your own dogfood - include package cycle rule in pom

Author: Ben Romberg

pom.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<parent>
@@ -111,6 +112,32 @@
 					</includes>
 				</configuration>
 			</plugin>
+			<plugin>
+				<artifactId>maven-enforcer-plugin</artifactId>
+				<version>1.2</version>
+				<dependencies>
+					<dependency>
+						<groupId>de.andrena.tools.nopackagecycles</groupId>
+						<artifactId>no-package-cycles-enforcer-rule</artifactId>
+						<version>1.0.3</version>
+					</dependency>
+				</dependencies>
+				<executions>
+					<execution>
+						<id>enforce-no-package-cycles</id>
+						<goals>
+							<goal>enforce</goal>
+						</goals>
+						<phase>compile</phase>
+						<configuration>
+							<rules>
+								<NoPackageCyclesRule
+									implementation="de.andrena.tools.nopackagecycles.NoPackageCyclesRule" />
+							</rules>
+						</configuration>
+					</execution>
+				</executions>
+			</plugin>
 		</plugins>
 	</build>