How to use new functions from 2025.3 for plugins that also support previous versions?

Thanks you very much for the presentation earlier today, Jakub.

I am repeating the question that I asked in the chat:

Can you provide examples of syntax in build.gradle.kts for plugins that support both 2025.2 and 2025.3? Using new functions intellijIdea() and compatiblePlugin() raise errors

TIA

Those functions are unrelated to supported IDE versions, you need to increase Gradle IntelliJ plugin version in build script independently

Please take a look at the blogpost IntelliJ Platform 2025.3: What Plugin Developers Should Know that covers these scenarios.