just a comment :

"org.jetbrains.compose.components:components-resources"

works with:

sourceSets {
    named("main") {
        resources.srcDir("src/commonMain/resources")
    }
}

but not with:

sourceSets["main"].res.srcDirs("src/commonMain/resources")

Are you sure the first one is top level

sourceSets

? Or it is inside

kotlin

block?

kotlin {
    sourceSets { ... }
}

both of them inside android { ... }

res

and

resources

are not the same thing

resources: The Java-style resources for this source-set res: The Android Resources directory for this source-set.