Invalid spring-boot-dependency version when using jgitver and local repo in maven

Question

When I use spring-boot-starter-parent combined with local repository and jgitver I get the following error:

[ERROR]   The project tmplsvcpkg:TMPL_SVC_NAME-parent:0.0.0-27-a592e4fb-feature_gitlabci-dirty (/home/user/git/service-template/pom.xml) has 1 error
[ERROR]   Non-resolvable parent POM for org.springframework.boot:spring-boot-starter-parent:[unknown-version]: Could not find artifact org.springframework.boot:spring-boot-dependencies:pom:0.0.0-27-a592e4fb-feature_gitlabci-dirty in internal-repository (https://mvnrepo) @ org.springframework.boot:spring-boot-starter-parent:[unknown-version], /home/user/git/service-template/.m2/repository/org/springframework/boot/spring-boot-starter-parent/2.2.0.RELEASE/spring-boot-starter-parent-2.2.0.RELEASE.pom, line 3, column 11 -> [Help 2]

Note unknown-version for spring-boot-starter-parent and 0.0.0-27-a592e4fb-feature_gitlabci-dirty for spring-boot-dependencies. The 0.0.0-27-... version is the version calculated by the jgitver. It looks like the version resolution gets messed up somehow. If I change the local repository to any directory outside of my project it starts working again. If I supress jgitver it starts working again. If I define the local repo even deeper in my project (like maven.repo.local=x/y/z/.m2/repository, the error is still present.

I defined the parent in my pom.xml in this way:

        <parent>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-parent</artifactId>
                <version>2.2.0.RELEASE</version>
        </parent>

And I run my maven in this way:

mvn compile -Dmaven.repo.local=.m2/repository -U

If I add jgitver.skip=true, everything works.

I suspect it might have something to do with the fact that spring-boot-starter parent defines it's parent (spring-boot-dependencies) as relative to it's position:

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-dependencies</artifactId>
    <version>2.2.0.RELEASE</version>
    <relativePath>../../spring-boot-dependencies</relativePath>
</parent>

Has anyone any ideas why it might be happening and how to fix it?

Answer 1

It turns out it's a well known issue and is resolved by a certain configuration of the plugin (you have to exclude the .m2 directory in plugin config). More details are in this issue:

https://github.com/jgitver/jgitver-maven-plugin/issues/60