Summary

I ran into a strange scenario where my local repository only had the pom, pom.sha1, and _maven.repositories for a particular artifact (not the *.jar* files). When gradle tried to resolve the artifact it failed despite having both mavenLocal() and mavenCentral() listed.

I'm not certain how the scenario happened, but as far as I know it happened with standard maven tooling. As this issue took me a while to track down I thought I would take the time to report it in case others ran into it.

Reproducing

Here are the steps to reproduce. I have attached a project to assist in making it easier.

1. Rename your local maven repository to ensure a fresh repository
2. Unzip the sample project
3. Run mvn package on the sample using Maven 3.0.4 (I don't think version matters)
4. Remove org/objenesis/objenesis/1.2/*.jar* files from the maven local repository
5. Run gradle build on the sample. The build will fail to resolve the dependencies despite having mavenCentral() as a repository too. You should see something like the following:

     FAILURE: Build failed with an exception.
   
     * What went wrong:
     Could not resolve all dependencies for configuration ':testRuntime'.
     > Artifact 'org.objenesis:objenesis:1.2@jar' not found.
     

Notes

1. If you run again without mavenLocal() the error goes away
2. I have included debug logs of dependency resolution working and of it failing in the attachment.