Description
Describe the bug
I have a multi-module Maven project, in which one of the shared modules is called commons and is used by other modules (let's called them A and B).
All modules (A, B and commons) contain classes that are @Serializable.
All modules do have kotlinx-serialization-json-jvm dependency.
The kotlin-maven-plugin is configured for all modules as follows:
<plugin>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-maven-plugin</artifactId>
<version>${kotlin.version}</version>
<executions>
<execution>
<id>compile</id>
<phase>compile</phase>
<goals>
<goal>compile</goal>
</goals>
</execution>
</executions>
<configuration>
<jvmTarget>21</jvmTarget>
<compilerPlugins>
<plugin>kotlinx-serialization</plugin>
</compilerPlugins>
</configuration>
<dependencies>
<dependency>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-maven-serialization</artifactId>
<version>${kotlin.version}</version>
</dependency>
</dependencies>
</plugin>When compiling the project, I'm getting an error on the first module that is using commons as dependency (e.g. A):
Your current kotlinx.serialization core version is 2.0.20, while current Kotlin compiler plugin unknown requires at least 1.0-M1-SNAPSHOT. Please update your kotlinx.serialization runtime dependency.
When I removed all @Serializable classes from commons and got rid of the plugin there, project was compiling again.
As a temporary workaround, I can suppress errors on all @Serializable classes which makes the compilation working:
@Suppress("PROVIDED_RUNTIME_TOO_LOW", "INLINE_CLASSES_NOT_SUPPORTED")
To Reproduce
In commons module:
@JvmInline
@Serializable
value class UserId(
val id: String,
)In A module:
import commons.UserId
@Serializable
data class Event(
val userId: UserId,
)Expected behavior
Multi-module Maven project can be compiled without any errors.
Environment
- Kotlin version: 2.0.20
- Library version: 1.7.2
- Kotlin platforms: JVM
- Maven version: 3.9.7
- IDE version: IntelliJ IDEA 2024.2.1
- Other relevant context: MacOS 14.5, JRE 21.0.4 Temurin