From 00ba8958e3670c4f340870d5b6e3f9ccbdb3a131 Mon Sep 17 00:00:00 2001 From: Gabriel Donadel Dall'Agnol Date: Fri, 4 Sep 2026 08:37:50 -0700 Subject: [PATCH] fix(android): skip explicit Kotlin plugin when AGP registers the kotlin extension AGP 9 ships built-in Kotlin support and registers the kotlin extension itself. Applying the Kotlin plugin again fails configuration with "Cannot add extension with name 'kotlin'". Check for the extension directly, which needs no AGP version table and covers AGP 10, where the android.builtInKotlin opt-out is removed. --- android/build.gradle | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/android/build.gradle b/android/build.gradle index d1ee5f56..e56a19c9 100644 --- a/android/build.gradle +++ b/android/build.gradle @@ -24,7 +24,13 @@ def isNewArchitectureEnabled() { } apply plugin: "com.android.library" -apply plugin: "kotlin-android" +// AGP 9 ships built-in Kotlin support and registers the `kotlin` extension +// itself. Applying the Kotlin plugin on top of it fails configuration with +// "Cannot add extension with name 'kotlin'". Only apply it when nothing has +// registered that extension yet. +if (project.extensions.findByName('kotlin') == null) { + apply plugin: "kotlin-android" +} if (isNewArchitectureEnabled()) { apply plugin: "com.facebook.react"