We have a central, company-wide Repository Manager (Nexus OSS), that works as a mirror for central and also holds our repositories "releases" and "snapshots". We have defined a group "public" which contains all repositories.
The pom.xml's for all projects only contain the "DistributionManagement"-element and no "repositories"-element because we have a lot of projects that use the same repo manager. So instead we want to define a settings.xml on our CI/CD-agents that have all neccessary informations. So far we've tried using a mirror, with "mirrorsOf" set to "*". We wanted to keep it as simple as possible so we didn't define a profile:
<mirror>
<id>nexus</id>
<mirrorOf>*</mirrorOf>
<url>https://nexusurl/nexus/repository/public/</url>
</mirror>
Now we get errors from builds that try to download dependencies but unable to find them:
Failed to execute goal on project example-project: Could not resolve dependencies for project group:project:jar:version: Could not find artifact group2:project2:jar:version-SNAPSHOT -> [Help 1]
When using a profile with the following configuration:
<profile>
<id>nexus</id>
<repositories>
<repository>
<id>nexus</id>
<name>nexus</name>
<url>https://nexusurl/nexus/repository/public/</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
<updatePolicy>always</updatePolicy>
</snapshots>
</repository>
</repositories>
</profile>
The mirror and the repository both use the same group in the Nexus OSS, so i can't wrap my head around why one works and the other doesn't.
Does Maven need the "repositories"-element to even apply the mirror? I would assume it can't apply the mirror if it doesn't even know what repository it is supposed to mirror?
Edit: Probably important info - It doesn't seem to crash with every dependency, mostly with company-internal dependencies, we've tracked them down in the Nexus OSS and they seem to be just fine and avaiable. We upload them specifically to the releases/snapshots-repositories, though download all from public. Is that maybe an issue too?
