ksp: Failed to upgrade to Kotlin 1.9

I updated my project to Kotlin 1.9.0 and Gradle 8.2, and got the following build info.

A problem was found with the configuration of task ':kaptGenerateStubsKotlin' (type 'KaptGenerateStubsTask').
  - Gradle detected a problem with the following location: 'D:\FreelanceProjects\sami\etip-backend\build\generated\ksp\main\kotlin'.

    Reason: Task ':kaptGenerateStubsKotlin' uses this output of task ':kspKotlin' without declaring an explicit or implicit dependency. This can lead to incorrect results being produce
d, depending on what order the tasks are executed.

    Possible solutions:
      1. Declare task ':kspKotlin' as an input of ':kaptGenerateStubsKotlin'.
      2. Declare an explicit dependency on ':kspKotlin' from ':kaptGenerateStubsKotlin' using Task#dependsOn.

Add the following in the build.gradle.kts, did not resolve the issue.


tasks.named("kaptGenerateStubsKotlin"){
    dependsOn("kspKotlin")
}

About this issue

Original URL
State: open
Created a year ago
Reactions: 8
Comments: 19 (1 by maintainers)

Commits related to this issue

Workaround for bug in KSP https://github.com/google/ksp/issues/1445 — committed to GisoBartels/kaster by GisoBartels a year ago
Bumped kotlin, ksp, spring, dgs, hibernate versions & updated gradle wrappers Also fixed encountered issues: * https://github.com/spring-projects/spring-security/issues/13568 * https://github.com/grad... — committed to bee-produced/bee-built by kurbaniec 8 months ago

Most upvoted comments

I solved the issue.

The kapt plugin must be declared after the ksp plugin.

plugins {
kotlin("jvm") version "1.9.0"
-kotlin("kapt") version "1.9.0"
id("com.google.devtools.ksp") version "1.9.0-1.0.12"
+kotlin("kapt") version "1.9.0"
}

Enaium on Oct 15, 2023

I got this warning in upgrading to kotlin 1.9.10

ksp-1.8.10-1.0.9 is too old for kotlin-1.9.10. Please upgrade ksp or downgrade kotlin-gradle-plugin to 1.8.10.

is there any ksp version that is compatible with the kotlin 1.9.10

you can try KSP 1.9.10-1.0.13

neetopia on Dec 5, 2023

I got this warning in upgrading to kotlin 1.9.10

ksp-1.8.10-1.0.9 is too old for kotlin-1.9.10. Please upgrade ksp or downgrade kotlin-gradle-plugin to 1.8.10.

is there any ksp version that is compatible with the kotlin 1.9.10

shivam-gupta007 on Dec 5, 2023

I guess some of the issues come from a previous workaround which lets IDE be aware of generated source:

kotlin {
	sourceSets.main {
		kotlin.srcDir("build/generated/ksp/main/kotlin")
	}
}

KSP has been doing this automatically, with dependencies correctly set up since 1.0.9. If you have this workaround in your build script, please try to remove it and see if the problem remains.

ting-yuan on Aug 4, 2023

@Enaium @uladzislau-hryshechka can you provide mode details on how your project is configured? From @hantsy 's case, it does seem like applying dataframe added a dependency since dataframe generates code with KSP that might be taken as input to KAPT.

https://github.com/babyfish-ct/jimmer/tree/main/example/kotlin/jimmer-sql-kt

kotlin("jvm") version "1.9.0"
kotlin("kapt") version "1.9.0"
kotlin("plugin.spring") version "1.9.0"
id("com.google.devtools.ksp") version "1.9.0-1.0.12"

Enaium on Jul 28, 2023