IssueTracker

For Kotlin 2.0 and KSP 2.0 the Cannot change attributes of configuration ':composeApp:debugFrameworkIosX64' after it has been locked for mutation really seems like a KSP issue. You should file a bug in their repository with a sample app if possible.

If you downgrade to Kotlin 1.9 then things 'should' work, there are example apps out there with such configuration, like the following one: https://github.com/realityexpander/KMP_Room/tree/main

Note that this issue happens when applying the Compose, KSP and Room Plugin together in Kotlin 2.0.x, the workaround for now is to not use the Room Gradle Plugin and instead specify the schema location vis KSP arguments:

// In the build.gradle
ksp {
    arg("room.schemaLocation", "${projectDir}/schemas")
}

Hi, I encountered a similar problem and was able to resolve it by updating the dependencies

room = "2.7.0-alpha08"
ksp = "2.0.20-1.0.25"

compose-plugin = "1.6.11"
kotlin = "2.0.20"