how and where to apply

plugins {
    id("org.jetbrains.kotlin.android") version "1.5.21"
}

? if I add it anywhere everything falls apart and I can’t run app any more. modules disappear am trying to adopt Compose, is this required or not?

I usually have something like this in the app build.gradle file:

plugins {
  id("com.android.application")
  kotlin("android")
}

I prefer to use

settings.gradle.kts

to manage plugin versions,

pluginManagement {
    plugins {
        resolutionStrategy {
            eachPlugin {
                val id = requested.id.id
                when {
                    id.startsWith("com.android.") ->
                        useModule("com.android.tools.build:gradle:7.0.2")
                    id.startsWith("org.jetbrains.kotlin.") -> useVersion("1.5.31")
                }
            }
        }
    }
}

then you can

plugins { id("com.android.application"); kotlin("android") }

in any

build.gradle

script without having to think about versions

I used to do it like that, inside

settings.gradle.kts

but when I did it messed up whole build. I made it work tho