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I'm not sure I did this right. Like this? <https://scans.gradle.com/s/l2teadb75l4ja>

I have `implementation("org.jetbrains.kotlin:kotlin-gradle-plugin:_")` in `buildSrc/build.grade.kts` which I understand influences the `kotlin-dsl` version. But changing its version still causes errors

There’s no need to adjust the Gradle-embedded Kotlin version - use `kotlin-dsl` as is.
The issue is due to a back-version of the kotlin-dsl plugin expecting Kotlin 1.5 but upgraded to Kotlin 1.8.10 (as expected, to align with embedded Kotlin).

btw, this: `implementation("org.jetbrains.kotlin:kotlin-gradle-plugin:_")` is not `kotlin-dsl,` which is a Gradle-provided plugin (not Jetbrains).  that kotlin-gradle-plugin is from kotlin(“jvm”) in a build script.
Related to that, build scripts should never mix kotlin(“jvm”) (which is for your application code) with `kotlin-dsl` (which is for your build script code).

Looking at this plugin view it’s likely there’s a build script that has both `kotlin-dsl` and `kotlin("jvm")`, resulting in conflicting Kotlin versions.  As noted above, never do that - any given script (or custom plugin) is either building Gradle code (`kotlin-dsl`) or your application code (`kotlin("jvm")`)

I don't think I define both `kotlin-dsl` and `kotlin("jvm")` in the same gradle file... My `buildSrc/build.gradle.kts` looks like this:
```plugins {
    `kotlin-dsl`
}

repositories {
    google()
    mavenCentral()
    mavenLocal()
}

dependencies {
    implementation("org.jetbrains.kotlin:kotlin-gradle-plugin:_")
    implementation("com.android.tools.build:gradle:_")
    implementation("custom plugin already working")
    implementation("new plugin which breaks the build")
}```
I've been using refreshVersions for version management. I tried removing `<http://plugin.org|plugin.org>.gradle.kotlin.kotlin-dsl=2.1.7`, but it also does not help

this shouldn’t be present for buildSrc projects: `   implementation(“org.jetbrains.kotlin:kotlin-gradle-plugin:_“)`

It is the KGP version that is applied by the convention plugin

well, it can be, if you intend for your plugin to apply kotlin(jvm), but it may need to be on the compileOnly configuration.

&gt; This version of Gradle expects version '4.0.7' of the `kotlin-dsl` plugin but version '2.1.7' has been applied to project ':buildSrc'. Let Gradle control the version of `kotlin-dsl` by removing any explicit `kotlin-dsl` version constraints from your build logic.	

But I tried removing `implementation(“org.jetbrains.kotlin:kotlin-gradle-plugin:_“)` and it's still not working

that’s not what the message says.  somewhere in the plugin code it’s applying the plugin.

I also tried to force kotlin-dsl version to 4.0.7 and it wasn't working

Just don't use a version but the accessor

And provide a build scan with the correct version applied

We cannot guess what the error changes to ;-)

Well, I'm off for the weekend, thank you for trying to help me