pf4j/demo/plugins/pom.xml

<?xml version="1.0"?>
<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">

    <parent>
        <groupId>org.pf4j.demo</groupId>
        <artifactId>pf4j-demo-parent</artifactId>
        <version>2.2.0</version>
    </parent>

    <modelVersion>4.0.0</modelVersion>
    <artifactId>pf4j-demo-plugins</artifactId>
    <version>2.2.0</version>
    <packaging>pom</packaging>
    <name>Demo Plugins Parent</name>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.7</java.version>

        <!-- Override below properties in each plugin's pom.xml -->
        <plugin.id />
        <plugin.class />
        <plugin.version />
        <plugin.provider />
        <plugin.dependencies />
    </properties>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.7.0</version>
                <configuration>
                    <source>${java.version}</source>
                    <target>${java.version}</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-assembly-plugin</artifactId>
                <version>3.1.0</version>
                <configuration>
                    <descriptorRefs>
                        <descriptorRef>jar-with-dependencies</descriptorRef>
                    </descriptorRefs>
                    <finalName>${project.artifactId}-${project.version}-plugin</finalName>
                    <appendAssemblyId>false</appendAssemblyId>
                    <attach>false</attach>
                    <archive>
                        <manifest>
                            <addDefaultImplementationEntries>true</addDefaultImplementationEntries>
                            <addDefaultSpecificationEntries>true</addDefaultSpecificationEntries>
                        </manifest>
                        <manifestEntries>
                            <Plugin-Id>${plugin.id}</Plugin-Id>
                            <Plugin-Version>${plugin.version}</Plugin-Version>
                            <Plugin-Provider>${plugin.provider}</Plugin-Provider>
                            <Plugin-Class>${plugin.class}</Plugin-Class>
                            <Plugin-Dependencies>${plugin.dependencies}</Plugin-Dependencies>
                        </manifestEntries>
                    </archive>
                </configuration>
                <executions>
                    <execution>
                        <id>make-assembly</id>
                        <phase>package</phase>
                        <goals>
                            <goal>single</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-deploy-plugin</artifactId>
                <configuration>
                    <skip>true</skip>
                </configuration>
                <version>2.8.2</version>
            </plugin>
        </plugins>
    </build>

    <modules>
        <module>plugin1</module>
        <module>plugin2</module>
    </modules>

    <dependencies>
        <dependency>
            <groupId>org.pf4j</groupId>
            <artifactId>pf4j</artifactId>
            <version>${project.version}</version>
            <!-- !!! VERY IMPORTANT -->
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>org.pf4j.demo</groupId>
            <artifactId>pf4j-demo-api</artifactId>
            <version>${project.version}</version>
            <!-- !!! VERY IMPORTANT -->
            <scope>provided</scope>
        </dependency>
    </dependencies>

</project>