Regression in 2.13.2: NPE in LocalProject during quarkus-maven-plugin:build when activating quarkus.bootstrap.workspace-discovery

[famod]

Describe the bug

Updating from 2.13.1 to 2.13.2 results in:

[ERROR] Failed to execute goal io.quarkus:quarkus-maven-plugin:2.13.2.Final:build (default) on project somecomp-server: Failed to build quarkus application: Failed to initialize Quarkus bootstrap Maven artifact resolver: Failed to load current project at /home/fmo/proj/someproj/somecomp/dev1/server/.flattened-pom.xml: Cannot invoke "java.io.File.toPath()" because the return value of "org.apache.maven.model.Model.getProjectDirectory()" is null -> [Help 1]
...
Caused by: java.lang.NullPointerException: Cannot invoke "java.io.File.toPath()" because the return value of "org.apache.maven.model.Model.getProjectDirectory()" is null
    at io.quarkus.bootstrap.resolver.maven.workspace.LocalProject.<init> (LocalProject.java:172)
    at io.quarkus.bootstrap.resolver.maven.workspace.WorkspaceLoader.loadAndCacheProject (WorkspaceLoader.java:143)
    at io.quarkus.bootstrap.resolver.maven.workspace.WorkspaceLoader.project (WorkspaceLoader.java:118)
    at io.quarkus.bootstrap.resolver.maven.workspace.WorkspaceLoader.loadProject (WorkspaceLoader.java:178)
    at io.quarkus.bootstrap.resolver.maven.workspace.WorkspaceLoader.load (WorkspaceLoader.java:230)
    at io.quarkus.bootstrap.resolver.maven.workspace.LocalProject.loadWorkspace (LocalProject.java:118)
    at io.quarkus.bootstrap.resolver.maven.BootstrapMavenContext.resolveCurrentProject (BootstrapMavenContext.java:321)
    at io.quarkus.bootstrap.resolver.maven.BootstrapMavenContext.<init> (BootstrapMavenContext.java:173)
    at io.quarkus.bootstrap.resolver.maven.MavenArtifactResolver.<init> (MavenArtifactResolver.java:91)
    at io.quarkus.bootstrap.resolver.maven.MavenArtifactResolver$Builder.build (MavenArtifactResolver.java:75)
    at io.quarkus.maven.QuarkusBootstrapProvider$QuarkusMavenAppBootstrap.artifactResolver (QuarkusBootstrapProvider.java:152)
    at io.quarkus.maven.QuarkusBootstrapProvider$QuarkusMavenAppBootstrap.doBootstrap (QuarkusBootstrapProvider.java:206)
    at io.quarkus.maven.QuarkusBootstrapProvider$QuarkusMavenAppBootstrap.bootstrapApplication (QuarkusBootstrapProvider.java:284)
    at io.quarkus.maven.QuarkusBootstrapProvider.bootstrapApplication (QuarkusBootstrapProvider.java:86)
    at io.quarkus.maven.QuarkusBootstrapMojo.bootstrapApplication (QuarkusBootstrapMojo.java:272)
    at io.quarkus.maven.QuarkusBootstrapMojo.bootstrapApplication (QuarkusBootstrapMojo.java:268)
    at io.quarkus.maven.BuildMojo.doExecute (BuildMojo.java:130)
    at io.quarkus.maven.QuarkusBootstrapMojo.execute (QuarkusBootstrapMojo.java:154)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:370)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:351)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:171)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:163)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call (MultiThreadedBuilder.java:210)
    at org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call (MultiThreadedBuilder.java:195)
    at java.util.concurrent.FutureTask.run (FutureTask.java:264)
    at java.util.concurrent.Executors$RunnableAdapter.call (Executors.java:539)
    at java.util.concurrent.FutureTask.run (FutureTask.java:264)
    at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1136)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:635)
    at java.lang.Thread.run (Thread.java:833)

Expected behavior

No error

Actual behavior

Error during build

How to Reproduce?

n/a at this point

Output of uname -a or ver

No response

Output of java -version

17.0.4

GraalVM version (if different from Java)

No response

Quarkus version or git rev

No response

Build tool (ie. output of mvnw --version or gradlew --version)

Maven 3.8.6

Additional information

Build happens via profile:

        <profile>
            <id>image-build</id>
            <properties>
                <!-- switch on early Quarkus workspace discovery for smaller layers -->
                <quarkus.bootstrap.workspace-discovery>true</quarkus.bootstrap.workspace-discovery>
                <quarkus.container-image.name>somecomp</quarkus.container-image.name>
            </properties>
            <build>
                <plugins>
                    <plugin>
                        <groupId>io.quarkus</groupId>
                        <artifactId>quarkus-maven-plugin</artifactId>
                        <executions>
                            <execution>
                                <goals>
                                    <goal>build</goal>
                                </goals>
                            </execution>
                        </executions>
                    </plugin>
                </plugins>
            </build>
        </profile>

Jib plugin is used to build the image (but it doesn't get that far).

[quarkus-bot]

/cc @geoand, @quarkusio/devtools

[famod]

@aloubyansky maybe some interference between #28419 and quarkus.bootstrap.workspace-discovery?

Edit: Problem vanishes when switching off quarkus.bootstrap.workspace-discovery.

[aloubyansky]

Thanks @famod, I believe #28542 will fix it