Trying to add 1.0.8 to an existing project, kotlin 1.4.20

composeOptions {
    kotlinCompilerVersion '1.4.20'
    kotlinCompilerExtensionVersion '1.0.0-alpha08'
}
kotlinOptions {
    useIR = true
    jvmTarget = "1.8"
}

Everything works until I add buildFeatures { compose true } When compose is enabled the project never finishes building. I have multiple attempts, and my last one has been running for 3 hours 36 minutes 😕 Any ideas what might be wrong?

That sounds like maybe we have an infinite loop or something in the Compose Compiler. You could try doing a

kill -3

to see what is on the stack. Or better yet, can you try to create a minimal repro and post it to github so we can investigate?

Could you explain what you mean by doing a

kill -3

? 😅

Maybe you are using something that uses kapt or kotlin Serialization?

yeah there are still synthetics in the project. I thought with 1.4.20 and 1.0.8 you could use both blob thinking upside down

kill -3

is an easy way to send a SIGQUIT to a running java process, which will result in the process dumping the jvm state including all thread stacks (https://www.baeldung.com/java-thread-dump#1-kill--3-command-linuxunix). But it's not the only way to get stack traces (as per other options in that same link). It would provide a hint as to what's going on, but it's not guaranteed to give us a useful answer, so if you aren't familiar with capturing JVM stacks, probably a minimal repro would be the best way to ensure we're able to reproduce and fix the issue.

i also struggled with that problem. Did you find the solution?

I have exactly the same issue. I tried adding compose to existing project and it ends up being stuck at

> Task :app:compileDevDebugKotlin

My project is quite complex so for me it's hard to distil what the problem is. I'm currently in the process of migrating kotlin-synthetics to viewbinding so it might be related

I finally caved, spent most of saturday replacing all of the synthetics with viewbinding 😅 Now it works 🙂

Oh so was that the issue? Maybe I should bite the bullet and do it as well 🙂

I think so, yeah!

@Mantas Varnagiris kapt in the same module will give you problems too (if you are using room for example)

I have kapt, but it's for Hilt. So that also might be an issue

you can check the samples where they use hilt to see a way to create the module structure to get it working