Implement bootstrap module for plugin descriptor generation

.github/workflows/maven-verify.yml

@@ -29,3 +29,16 @@ jobs:
       maven4-enabled: true  # build by Maven 3.x and 4.x
       maven4-version: '4.0.0-rc-6' # the same as used in project
 
+  bootstrap:
+    name: Verify bootstrap profile
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: '17'
+          cache: maven
+      - name: Build with bootstrap profile
+        run: mvn -B -Pbootstrap verify
+

maven-plugin-plugin-bootstrap/pom.xml

@@ -0,0 +1,205 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one
+  ~ or more contributor license agreements.  See the NOTICE file
+  ~ distributed with this work for additional information
+  ~ regarding copyright ownership.  The ASF licenses this file
+  ~ to you under the Apache License, Version 2.0 (the
+  ~ "License"); you may not use this file except in compliance
+  ~ with the License.  You may obtain a copy of the License at
+  ~
+  ~   http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing,
+  ~ software distributed under the License is distributed on an
+  ~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  ~ KIND, either express or implied.  See the License for the
+  ~ specific language governing permissions and limitations
+  ~ under the License.
+-->
+<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>
+    <groupId>org.apache.maven.plugin-tools</groupId>
+    <artifactId>maven-plugin-tools</artifactId>
+    <version>4.0.0-beta-4-SNAPSHOT</version>
+  </parent>
+
+  <groupId>org.apache.maven.plugins</groupId>
+  <artifactId>maven-plugin-plugin-bootstrap</artifactId>
+  <packaging>jar</packaging>
+
+  <name>Maven Plugin Plugin Bootstrap</name>
+  <description>Bootstrap module for generating Maven plugin descriptors outside Sisu/Plexus container.</description>
+
+  <properties>
+    <maven.install.skip>true</maven.install.skip>
+    <maven.deploy.skip>true</maven.deploy.skip>
+    <gpg.skip>true</gpg.skip>
+  </properties>
+
+  <dependencies>
+    <dependency>
+      <groupId>org.apache.maven</groupId>
+      <artifactId>maven-core</artifactId>
+      <scope>provided</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.maven.plugin-tools</groupId>
+      <artifactId>maven-plugin-tools-api</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.maven.plugin-tools</groupId>
+      <artifactId>maven-plugin-tools-generators</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>org.ow2.asm</groupId>
+      <artifactId>asm</artifactId>
+    </dependency>
+
+    <!-- runtime extractors used by default by plugin-tools -->
+    <dependency>
+      <groupId>org.apache.maven.plugin-tools</groupId>
+      <artifactId>maven-plugin-tools-annotations</artifactId>
+    </dependency>
+    <!-- for source code annotations of the mojos -->
+    <dependency>
+      <groupId>org.apache.maven.plugin-tools</groupId>
+      <artifactId>maven-plugin-annotations</artifactId>
+    </dependency>
+
+    <!-- Maven -->
+    <dependency>
+      <groupId>org.apache.maven</groupId>
+      <artifactId>maven-plugin-api</artifactId>
+      <scope>provided</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.maven</groupId>
+      <artifactId>maven-model</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.maven</groupId>
+      <artifactId>maven-settings</artifactId>
+      <scope>provided</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.maven</groupId>
+      <artifactId>maven-repository-metadata</artifactId>
+      <version>${maven3Version}</version>
+      <scope>provided</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.maven</groupId>
+      <artifactId>maven-artifact</artifactId>
+      <scope>provided</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.maven.resolver</groupId>
+      <artifactId>maven-resolver-api</artifactId>
+      <scope>provided</scope>
+    </dependency>
+    <dependency>
+      <groupId>javax.inject</groupId>
+      <artifactId>javax.inject</artifactId>
+      <version>1</version>
+      <scope>provided</scope>
+    </dependency>
+
+    <!-- plexus -->
+    <dependency>
+      <groupId>org.codehaus.plexus</groupId>
+      <artifactId>plexus-utils</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>org.eclipse.sisu</groupId>
+      <artifactId>org.eclipse.sisu.plexus</artifactId>
+      <scope>provided</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.codehaus.plexus</groupId>
+      <artifactId>plexus-velocity</artifactId>
+    </dependency>
+
+    <!-- for m2e support -->
+    <dependency>
+      <groupId>org.sonatype.plexus</groupId>
+      <artifactId>plexus-build-api</artifactId>
+      <version>0.0.7</version>
+    </dependency>
+
+    <!-- tests -->
+    <dependency>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter-api</artifactId>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter-params</artifactId>
+      <scope>test</scope>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <executions>
+          <execution>
+            <id>default-compile</id>
+            <configuration>
+              <compileSourceRoots>
+                <compileSourceRoot>${project.basedir}/src/main/java</compileSourceRoot>
+                <compileSourceRoot>${project.basedir}/../maven-plugin-plugin/src/main/java</compileSourceRoot>
+              </compileSourceRoots>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
+      <plugin>
+        <groupId>org.codehaus.mojo</groupId>
+        <artifactId>exec-maven-plugin</artifactId>
+        <version>3.6.3</version>
+        <executions>
+          <execution>
+            <id>generate-bootstrap-descriptor</id>
+            <goals>
+              <goal>java</goal>
+            </goals>
+            <phase>process-classes</phase>
+            <configuration>
+              <mainClass>org.apache.maven.plugin.plugin.StandaloneDescriptorGenerator</mainClass>
+              <classpathScope>test</classpathScope>
+              <systemProperties>
+                <systemProperty>
+                  <key>maven.repo.local</key>
+                  <value>${settings.localRepository}</value>
+                </systemProperty>
+              </systemProperties>
+              <arguments>
+                <argument>${project.basedir}/pom.xml</argument>
+              </arguments>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-install-plugin</artifactId>
+        <configuration>
+          <skip>true</skip>
+        </configuration>
+      </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-deploy-plugin</artifactId>
+        <configuration>
+          <skip>true</skip>
+        </configuration>
+      </plugin>
+    </plugins>
+  </build>
+</project>