Lombok methods don't get generated in classes while building spring boot module using them

Question

Springboot 3.1.2 Java 17

I have a parent project containing two modules

Parent pom:

<project ...>
    <groupId>com.demo</groupId>
    <artifactId>prnt</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>pom</packaging>
    <name>prnt</name>
    <description>Parent module</description>

    <modules>
        <module>common</module>
        <module>module_one</module>
    </modules>
</project>

common pom:

<project ...>
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.1.2</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.demo</groupId>
    <artifactId>common</artifactId>
    <packaging>jar</packaging>
    <name>common</name>
    <description>Common Module</description>

    <properties>
        <java.version>17</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
    </dependencies>
</project>

module_one pom:

<project ...>
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.1.2</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.demo</groupId>
    <artifactId>module_one</artifactId>
    <packaging>jar</packaging>
    <name>module_one</name>
    <description>Module 1</description>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>com.demo</groupId>
            <artifactId>common</artifactId>
            <version>${project.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

module_one module-info:

open module com.demo.module_one {
    requires com.demo.common;
    uses com.demo.common.src.model.User;
}

com.demo.common is supposed to be a shared library and com.demo.module_one an executable applciation.

com.demo.common.src.model.User uses @lombok.Builder and @lombok.Data

While running module_one as a spring boot application, everything works properly. Every instance of User in module_one can call .builder, and all .get and .set methods. However, while building module_one with mvn clean install, the lombok methods are not generated and cause compilation failures becasue of symbol not found errors being thrown.

I have tried:

• Adding requires static lombok; to module_one's module-info.
• Keeping the lombok dependency and removing the lombok exclusion in module_one's pom, vice-versa and removing them both.
• Using every permutation of the provided scope for the lombok dependency in common and module_one's poms.
• Using the regular maven plugin, as opposed to spring boot maven, along with the lombok annotaion processor as recommended here.

Nothing seems to work...