Quarkus extension using Gradle started failing after #49224

[LarsSven]

Describe the bug

#49224 made changes to the Gradle dependencies setup. Since that change, our SignalR extension started failing: https://gitlab.com/rug-digitallab/resources/quarkus-signalr/-/merge_requests/160

Expected behavior

Our extension should be able to upgrade to 3.25.1 without failures

Actual behavior

Our extension started failing with:

Execution failed for task ':deployment:test'.
> Could not resolve all files for configuration ':deployment:quarkusTestRuntimeClasspathConfigurationDeployment'.
   > Could not resolve project :deployment.
     Required by:
         project :deployment
      > The consumer was configured to find a library for use during runtime, packaged as a jar, preferably optimized for standard JVMs, and its dependencies declared externally, as well as attribute 'quarkus.test.conditional-dependency.deployment' with value 'on', attribute 'quarkus.test.deployment-dependency.deployment' with value 'on'. However we cannot choose between the following variants of project :deployment:
          - quarkusDependency
          - testImplementationDeployment
        All of them match the consumer attributes:
          - Variant 'quarkusDependency' capability 'nl.rug.digitallab.quarkus:deployment:0.0.3-SNAPSHOT' declares a library for use during runtime, packaged as a jar, preferably optimized for standard JVMs, and its dependencies declared externally, as well as attribute 'quarkus.test.conditional-dependency.deployment' with value 'on', attribute 'quarkus.test.deployment-dependency.deployment' with value 'on'
          - Variant 'testImplementationDeployment' capability 'nl.rug.digitallab.quarkus:deployment:0.0.3-SNAPSHOT' declares a library for use during runtime, packaged as a jar, preferably optimized for standard JVMs, and its dependencies declared externally, as well as attribute 'quarkus.test.conditional-dependency.deployment' with value 'on', attribute 'quarkus.test.deployment-dependency.deployment' with value 'on'

How to Reproduce?

1. Clone https://gitlab.com/rug-digitallab/resources/quarkus-signalr
2. Check out commit 7cb256813743414a970b81fa8dfc8a3de0396b10 (or develop and upgrade the Quarkus dependency in gradle.properties
3. Try running ./gradlew test and observe the failure.

Output of uname -a or ver

Ubuntu 25.04

Output of java -version

OpenJDK 21.0.8

Quarkus version or git rev

3.25.2

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

Gradle 9.0.0

Additional information

No response

[quarkus-bot]

/cc @glefloch, @quarkusio/devtools

[LarsSven]

@aloubyansky

[aloubyansky]

Thanks @LarsSven. I've reproduced it. We'll need to complete this refactoring, which started in the application plugin, in the extension plugin.