Getting kotlin dependency issue in buildSrc when used with Firestore

Question

I am using kotlin 1.7.20 as below

classpath ("org.jetbrains.kotlin:kotlin-gradle-plugin:1.7.20")

When I acess below firebase code from a normal build.gradle, it gets compiled. But when used from inside of buildSrc, I get error as kotlin 1.5.1 module was expected, but found 1.7.1

plugins {
    `kotlin-dsl`
}

repositories {
    google()
    mavenCentral()
}

dependencies {
    // firebase
    implementation (platform("com.google.firebase:firebase-bom:31.0.2"))
    implementation ("com.google.firebase:firebase-firestore-ktx")
}

Error is like below

/Users/xx/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-common/1.7.10/0d0a9e3f3673ba/kotlin-stdlib-common-1.7.10.jar!/META-INF/kotlin-stdlib-common.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.7.1, expected version is 1.5.1.

My main requirement is to trigger firebase in case of gradle sync through custom task.

I tried changing the values, but didn't work

Answer 1

This happened due to the version mismatch issue. I recommend you to update the kotlin version to the latest. For this case I am providing the required version by your system which needs changes to this line from build.gradle
From

ext.kotlin_version = '1.5.1'

to

ext.kotlin_version = '1.7.1'