Hello! Why does creating a blank new Compose Multiplatform project create 2 different modules for th...

# compose

[Benjamin Deroche]

Hello! Why does creating a blank new Compose Multiplatform project create 2 different modules for the JVM target. There is the desktop.jvmMain module and the common.desktopMain module, and I fail to understand what is the difference between those 2.
In fact I think IntelliJ is as confused as I am because if you select "Compose Desktop Module" instead of "Console Application" in common > desktop when creating a new project, then the code from desktop.jvmMain does not even work (it does not compile .. but is never run anyway)

[solidogen]

jvmMain includes JDK/java stuff, commonMain is intended to contain only pure kotlin

this split let’s you add e.g. androidMain/jsMain and consume this common code from other platforms like web or mobile

[solidogen]

you can also use multiplatform libraries in commonMain, so you are able to have logic like networking/caching that works in all the platforms, not just sharing some data classes

[Benjamin Deroche]

The thing is it generated an actual fun getPlatformName() function in desktop.jvmMain, but it does not compile: "Actual function 'getPlatformName' has no corresponding expected declaration"

[Benjamin Deroche]

If I delete this function, then when I run ./gradlew run it run the main function from common.desktopMain and then when I close the window it run the main function from desktop.jvmMain

[Benjamin Deroche]

I think I get the idea but this behavior totally confused me.

[solidogen]

You should have expect getPlatformName() in commonJvm then

[Benjamin Deroche]

Yes I have the expect in common.commonMain and its platform specific implementations using actual keyword in common.androidMain, common.desktopMain and desktop.jvmMain

[Benjamin Deroche]

That's how it was generated by the project template

[Benjamin Deroche]

I think I will generate a new project and see how it go, I haven't made much modifications to this one anyway

[Colton Idle]

I'd ask in #compose-desktop maybe?