Maven multi module project with Quarkus in dev mode

Question

I am new to Quarkus and try to use it in a Maven multi module project. My project is structured as followed:

- quarkustest (pom)
  - quarkustest-application (jar)
  - quarkustest-backend (pom)
    - quarkustest-backend-rest-api (jar)
  - quarkustest-dependencies (pom)
  - quarkustest-parent (pom)

The application module executes the quarkus-maven-plugin with build-goal. The quarkustest-backend-rest-api contains a simple REST controller and thus also a beans.xml in /src/main/resources/META-INF. The rest-api-module is references by the application module.

If I package the whole project with mvn package, the resulting runner-jar works as expected. However, if I try to start the project in dev mode with mvn compile quarkus:dev, I get following exception:

ERROR] Failed to execute goal io.quarkus:quarkus-maven-plugin:1.0.0.CR2:dev (default-cli) on project quarkustest-application: Failed to run: Failed to resolve Quarkus application model: Failed to resolve dependencies for test.quarkustest:quarkustest-application:jar:1.0.0-SNAPSHOT: Could not find artifact test.quarkustest:quarkustest-backend-rest-api:jar:1.0.0-SNAPSHOT -> [Help 1]

I am not quite sure how to solve this. Is there any kind of best practice on multi module projects for Quarkus? Any obvious mistake I am doing here?

Edit 1 (relevant pom files)

quarkustest-application

<parent>
    <groupId>test.quarkustest</groupId>
    <artifactId>quarkustest-parent</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <relativePath>../quarkustest-parent</relativePath>
</parent>

<artifactId>quarkustest-application</artifactId>

<dependencies>
    <dependency>
        <groupId>test.quarkustest</groupId>
        <artifactId>quarkustest-backend-rest-api</artifactId>
    </dependency>
</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-maven-plugin</artifactId>
            <version>${quarkus-plugin.version}</version>
            <executions>
                <execution>
                    <goals>
                        <goal>build</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>

quarkustest-parent

<parent>
    <groupId>test.quarkustest</groupId>
    <artifactId>quarkustest-dependencies</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <relativePath>../quarkustest-dependencies</relativePath>
</parent>

<artifactId>quarkustest-parent</artifactId>
<packaging>pom</packaging>

quarkustest-dependencies

<groupId>test.quarkustest</groupId>
<artifactId>quarkustest-dependencies</artifactId>
<version>1.0.0-SNAPSHOT</version>
<packaging>pom</packaging>

<properties>
    ...
</properties>

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>${quarkus.platform.group-id}</groupId>
            <artifactId>${quarkus.platform.artifact-id}</artifactId>
            <version>${quarkus.platform.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
        <dependency>
            <groupId>test.quarkustest</groupId>
            <artifactId>quarkustest-backend-rest-api</artifactId>
            <version>1.0.0-SNAPSHOT</version>
        </dependency>
    </dependencies>
</dependencyManagement>

<build>
    <plugins>
        <plugin>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-maven-plugin</artifactId>
            <version>${quarkus-plugin.version}</version>
        </plugin>
    </plugins>
</build>

quarkustest (aggregator)

<parent>
    <groupId>test.quarkustest</groupId>
    <artifactId>quarkustest-parent</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <relativePath>quarkustest-parent</relativePath>
</parent>

<artifactId>quarkustest</artifactId>
<packaging>pom</packaging>

<modules>
    <module>quarkustest-dependencies</module>
    <module>quarkustest-parent</module>
    <module>quarkustest-backend</module>
    <module>quarkustest-application</module>
</modules>

Answer 1

Keep the quarkus-maven-plugin in the quarkustest-application and run

1. mvn clean install
2. mvn quarkus:dev -pl quarkustest-application

Now it will pick up changes in all submodules.