In trying to use Compose Desktop 1 2 I m running into ProGua

Question

In trying to use Compose Desktop 1 2 I m running into ProGuard issues with it minifying things that need to be accessed reflectively specifically using HiveMQ MQTT client which relies on jctools I d prefer to just disable it for now because I m just building a toy app and don t want to spend time learning and configuring ProGuard I tried just downgrading to Compose 1 1 but now am getting an error about the IR compiler ```Unable to find method void org jetbrains kotlin gradle dsl KotlinJvmOptions setUseIR boolean void org jetbrains kotlin gradle dsl KotlinJvmOptions setUseIR boolean ``` Does anyone know how to just disable ProGuard Most stackoverflow posts unfortunately don t cover it with modern build gradle kts syntax

Mark Alvaro · Answer

And for what it s worth I ve tried this ```compose desktop application mainClass = MainKt nativeDistributions targetFormats TargetFormat Dmg TargetFormat Msi TargetFormat Deb packageName = myapp packageVersion = 1 0 0 buildTypes release proguard configurationFiles from ``` with a file at the root level of my project same directory as build gradle kts with the following contents ``` keepclassmembernames class io netty keepclassmembers class org jctools ``` Where I was trying to follow the directions on the using the suggestions from for configuration But ultimately it s still failing at runtime as it can t find the class or do some logic in that class s initialization block

Mark Alvaro · Answer

Also have tried setting `isEnabled set false ` in the proguard block above but that doesn t seem to do it either

Mark Alvaro · Answer

It s definitely frustrating to introduce something like ProGuard and not document well how to opt out or configure it specifically when using Compose Desktop given most Android examples I see on Stack Overflow don t seem to work for Compose Desktop

Dima Avdeev · Answer

< alexey tsvetkov> Can you please help with answer

Mark Alvaro · Answer

Tried downgrading to Compose 1 1 0 which ultimately I got to work with Kotlin 1 6 10 Unfortunately still running into the same issue of class not found initialization errors Any other ideas for why packaging as dmg instead of just running in IDEA fails bc of class not found stuff with classes that use reflection

alexey.tsvetkov · Answer

< Mark Alvaro> 1 ProGuard support is opt in Basically we introduced an addition release toolchain So if you don t use release tasks e g `createReleaseDistributable` is the release version of `createDistributable` then ProGuard does not run This is documented 2 Even before ProGuard support we had support which minifies JDK image through `jlink` This only applies to the JDK standard library It was enabled by default to improve the default image size out of the box which was probably not the best decision However at the time we did not find the way to reliable automate selection of modules so a set of included modules is either has to be adjusted manually or all modules should be included This part is documented

Mark Alvaro · Answer

Thank you so much for the detailed response Super helpful and hopefully will have me on my way

alexey.tsvetkov · Answer

< Mark Alvaro> feel free to mention me in this thread or write directly using DM in case if the docs don t help Also I hope we will be able to simplify amp streamline the minification process in the coming months but sadly it won t happen overnight

Mark Alvaro · Answer

Just got it working

Mark Alvaro · Answer

Had already gone to Compose 1 1 0 and the includeAllModules flag in the docs you linked to fixed my problems