Hi, all. Is there an easy to follow guide for how ...

# multiplatform

[Darryl Pierce]

Hi, all. Is there an easy to follow guide for how to upgrade a project's dependencies; i.e., AGP, Kotlin, etc? I want to migrate my project's viewmodel from the current implementation (which uses ides from Kodeco's book on KMP) to using KMP-ObservableViewModel. But that requires upgrading several parts of our project, which are what was provided by the original KMP project created by Kotlin Multiplatform Wizard.

[Darryl Pierce]

I was able to upgrade the AGP plugin pretty easily:

diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 07ae32b..4c2562e 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,5 +1,5 @@
 [versions]
-android-gradle-plugin = "8.5.0"
+android-gradle-plugin = "8.9.1"
 sonarqube-plugin = "4.4.1.3373"
 kotlin = "1.9.24"
 activity-compose = "1.8.0"
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index b7f6793..3ca022e 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
 #Sat Feb 17 16:54:35 EST 2024
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.11.1-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

Now I'm trying to upgrade the Compose compiler following these directions:

https://developer.android.com/develop/ui/compose/compiler

and am having no luck. Adding the version reference and the plugin to the libs.version.toml file and the root gradle file worked. But when I added the plugin reference to my shared module and android app it gives me 21 errors and fails.

[Darryl Pierce]

So I've taken the approach to incrementally try to migrate the project to newer versions of dependencies. Upgrading AGP worked easily, as mentioned above. I removed activity-compose as an unused dependency (seems it was added by KMW when the project was created). And I was able to upgrade kotlin from 1.9.24 to 2.0.21 with minimal effort: just had to upgrade some Gradle options to use the newer compiler options DSL.

Where I'm stuck now is trying to upgrade Kotlin to 2.1.0. As soon as I do that and let Android Studio do its thing, it fails with:
``````

Untitled

[Darryl Pierce]

What should I change at this point to ultimate move to Kotlin 2.1.20 so I can use the latest KMP-ObservableViewModel?

[Jacob Ras]

Are you keeping them in sync? KMP ObservableVM has its releases tied to the Kotlin version. Latest one supports 2.1.20: https://github.com/rickclephas/KMP-ObservableViewModel/releases/tag/v1.0.0-BETA-10

Same with KSP, in case you have it.

[Darryl Pierce]

@Jacob Ras I'm trying to add that version of KVM-OVM as a new dependency to use it. The problem is that when I update my project to use a newer version of Kotlin, I'm getting the errors I documented above, and I'm not finding a clear cause for the error.

(edit)

Sorry, maybe I misunderstood you. Are you suggesting I bump both KMP-OVM and Kotlin versions at the same time? I'll give that a try now and respond with the result.

(2nd edit)

Tried that. It reduced the number of errors by one to 11 when I bumped Kotlin to 2.1.0 and KMP-OVM to -beta-8.

[Darryl Pierce]

The errors all seem to be related to the ios and apple targets, looking at the output.

[Darryl Pierce]

Stuff like:

e: org.jetbrains.kotlin.gradle.plugin.ide.dependencyResolvers.IdeCommonizedNativePlatformDependencyResolver failed on :shared::shared/appleMain
java.lang.NoSuchMethodError: 'org.jetbrains.kotlin.library.impl.BuiltInsPlatform org.jetbrains.kotlin.library.KotlinLibraryKt.getBuiltInsPlatform(org.jetbrains.kotlin.library.BaseKotlinLibrary)'
	at org.jetbrains.kotlin.gradle.plugin.ide.FactoriesKt.KlibExtra(factories.kt:82)