Hi, trying to use value classes in 1.5 but it's sa...

# gradle

[Eivind]

Hi, trying to use value classes in 1.5 but it's saying i need @JvmInLine. But it can't resolve it. Have a feeling in need to turn some thing on. Using gradle Kotlin dsl.

[plastiv]

Are you sure you are on Kotlin 1.5? Afaik Gradle 7.0 bundles Kotlin 1.4.31 so kotlin-dsl gradle plugin probably misses the annotation on classpath.

[Eivind]

Have some problems on that as well. Getting the one in this channel whit build source and gradle

[Eivind]

I have my gradle-plugin set in dependencies to 1.5.0 in the buildSrc build script. The idea was to sync the project and Kotlin version via convention plugins

[Eivind]

Think im just giving up on 1.5 for now, not finding any good way to fix this

[ephemient]

if you're trying to use Kotlin 1.5 inside buildSrc, basically you can't, the version bundled with Gradle's Kotlin DSL overrides it. https://github.com/gradle/gradle/issues/16345

[Eivind]

The Kotlin dsl can be 1.4 but i want the code that i build to be 1.5. but it looks like the convention plugin i have in buildSrc just get confused

[christophsturm]

if you post your root build.gradle.kts and buildSrc/build.gradle.kts maybe someone can help you figure out whats up

[ephemient]

yes, it is challenging to build convention plugins with Kotlin for Kotlin due to this issue. you can try forcing dependencies.stdlib and kotlinOptions.api-language in buildSrc/build.gradle(.kts) but no guarantees that will work.

[Eivind]

Don't have a root file. The buildSrc build gradel is basic. It has the Kotlin version i want to use and the Kotlin gradle plugin as a dependensy to set the version to 1.5 as the convention plugin blocks me from that

[Eivind]

Now i have a crash from the compiler on value classes. So it's probably still using the wrong compiler but the librarys are 1.5

[ephemient]

your buildSrc module needs to run on Kotlin 1.4 to work inside Gradle, even when it's defining a convention plugin that uses Kotlin 1.5. hence, try to override the language api version and stdlib dependencies in buildSrc/build.gradle. that doesn't affect what the plugin applies to your real build, just how the plugin itself works.

[Eivind]

In the convention plugin gradle.kts it wont let you set the kotlin("jvm") version 1.5 så the awnser i got last time was to set in the build.gradle.kts file in buildSrc root to have the kotlin-dsl plugin and add implementation (kotlin ("gradle-plugin", version="1.5.0"))

[Eivind]

In the convention plugin i have added the dependensy and set lanuagesSettings on the source set

[plastiv]

What are you trying to do? It is not possible to write kotlin-dsl in kotlin 1.5 with gradle 7.0 simple as that

[Eivind]

Im trying to upgrade a big project to Kotlin 1.5. there are may modules so we are using gradle convention plugins to sync libraries and versions

[Eivind]

So basically i vant 1.5 for the project, the Kotlin-dsl can stay what is has to be

[plastiv]

Understandable, yet this is exactly an issue here. You can’t, until Gradle migrates to bundling Kotlin 1.5. There are hacks possible but YMMV.
Gradle doesn’t isolate old kotlin compiler during kotlin-dsl script evaluation at buildSrc folder and enforces old kotlin into your project classpath
• https://youtrack.jetbrains.com/issue/KT-41142
• https://github.com/gradle/gradle/issues/16345

[Eivind]

Thanks, this is annoying. I guess we will keep on 1.4 until next maintenance window when Java 17 release hopefully this is fixed by then