Hi All. I am getting build errors when using the f...

# spring

[Greg Steckman]

Hi All. I am getting build errors when using the following plugins:

id("io.spring.dependency-management") version "1.0.10.RELEASE"
id("org.springframework.boot") version "2.3.3.RELEASE"

Even without any Spring dependencies declared. If I don't include the dependency-management plugin, the errors do not occur. The errors are:

w: Runtime JAR files in the classpath should have the same version. These files were found in the classpath:
    C:/Users/Greg/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-jdk8/1.4.10/998caa30623f73223194a8b657abd2baec4880ea/kotlin-stdlib-jdk8-1.4.10.jar (version 1.4)
    C:/Users/Greg/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-jdk7/1.3.72/3adfc2f4ea4243e01204be8081fe63bde6b12815/kotlin-stdlib-jdk7-1.3.72.jar (version 1.3)
    C:/Users/Greg/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.3.72/8032138f12c0180bc4e51fe139d4c52b46db6109/kotlin-stdlib-1.3.72.jar (version 1.3)
    C:/Users/Greg/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-common/1.4.10/6229be3465805c99db1142ad75e6c6ddeac0b04c/kotlin-stdlib-common-1.4.10.jar (version 1.4)
w: Some runtime JAR files in the classpath have an incompatible version. Consider removing them from the classpath

and:

e: org.jetbrains.kotlin.util.KotlinFrontEndException: Exception while analyzing expression at (8,13) in C:/Users/Greg/Documents/git/test/src/jsMain/kotlin/client.kt
        at org.jetbrains.kotlin.types.expressions.ExpressionTypingVisitorDispatcher.logOrThrowException(ExpressionTypingVisitorDispatcher.java:253)

Long stack trace omitted, followed by

Caused by: java.lang.NoSuchMethodError: 'kotlin.sequences.Sequence kotlin.sequences.SequencesKt.flatMapIterable(kotlin.sequences.Sequence, kotlin.jvm.functions.Function1)'
        at org.jetbrains.kotlin.resolve.calls.components.CollectionTypeVariableUsagesInfo.getDependentTypeParameters(ResolutionParts.kt:393)
        at org.jetbrains.kotlin.resolve.calls.components.CollectionTypeVariableUsagesInfo.getDependentTypeParameters$default(ResolutionParts.kt:389)

This was with a new Multiplatform Kotlin project created in IntelliJ, but just adding those 2 plugins to the build.gradle.kts. I think this is an issue with the Spring dependency-management plugin. I am not sure if this is the best place to ask for help with this, if it is a bug or something I am doing wrong. If I should file a bug report in another Spring channel, please advise where that should be. Thanks!

[thanksforallthefish]

you can try to add kotlin.version to your gradle.properties file to tell spring which version to use, but spring will support kotlin officially in version 5.4 (out yesterday as independent dependency but bundled in boot 2.4). for us, kotlin 1.4 is working, but our project is jvm only

[Greg Steckman]

That solved the problem. Thanks for the help.