Protobuf kotlin generation configuration produces `Unrecognized configuration key`

[LarsSven]

Describe the bug

Quarkus 3.21 introduced Kotlin protobuf support, which is enabled by default if quarkus-kotlin is included. One can disable this via quarkus.generate-code.grpc.kotlin.generate.

However, in our project, when we set this value to false, we get the following log message during assembling:

Unrecognized configuration key "quarkus.generate-code.grpc.kotlin.generate" was provided; it will be ignored; verify that the dependency extension for this configuration is set or that you did not make a typo

However, this is clearly false, because if we switch the value from false to true, the code breaks, which is expected for our codebase, since we want to disable the Kotlin protobuf for this specific module.

Note that we use application.yml to configure our Quarkus application

Expected behavior

Setting quarkus.generate-code.grpc.kotlin.generate to false should disable kotlin protobuf generation, and not produce a log message

Actual behavior

The value is correctly set and used, however the following log message is produced:

Unrecognized configuration key "quarkus.generate-code.grpc.kotlin.generate" was provided; it will be ignored; verify that the dependency extension for this configuration is set or that you did not make a typo

How to Reproduce?

Reproducer:

Steps to reproduce this behaviour:

1. Go to https://gitlab.com/rug-digitallab/products/themis/runtimes/kotlin-runtimes and pull the develop branch
2. Run ./gradlew container-runtime:process-monitor:assemble
3. Observe the log message

Output of uname -a or ver

Ubuntu 24.10 Kernel version 6.11.0-21-generic

Output of java -version

21.0.6

Quarkus version or git rev

3.21.0

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

Gradle 8.13

Additional information

No response

[quarkus-bot]

/cc @geoand (kotlin), @radcortez (config)