With Kotlin 1.3 I'm seeing the following error wit...

# multiplatform

[spierce7]

With Kotlin 1.3 I'm seeing the following error with mpp: The Feature "multi platform projects" is experimental and should be enabled explicitly. How do I enable multi platform projects explicitly in the gradle file? The IDE is of no use here.

[ankushg]

Check out this ticket which shows how to pass command-line flags to native and all other multiplatform targets:

[ankushg]

https://youtrack.jetbrains.com/issue/KT-26758

[ankushg]

I believe the flag you want is -Xuse-experimental=kotlin.Experimental

[Liliia]

Do you see this in a project containing an Android target? If so, and the Gradle build passes successfully, then it’s an IDE bug, which will be fixed in upcoming Kotlin 1.3-RC

[spierce7]

I see this in the commonMain source set of a mpp project that has a common and Android module.

[spierce7]

@ankushg That doesn't work when adding that to my org.gradle.jvmargs in my gradle.properties

[spierce7]

@Liliia Any recommendations for how to work around it for now? I filed a bug against it earlier: https://youtrack.jetbrains.com/issue/KT-26903

[Liliia]

Unfortunately, there is no workaround for it, this is a tooling bug (https://youtrack.jetbrains.com/issue/KT-26356 and related) which is fixed in upcoming Kotlin 1.3-RC. Nevertheless, you can try out the latest build from the corresponding branch: https://teamcity.jetbrains.com/viewLog.html?buildId=1619921&tab=artifacts&buildTypeId=Kotlin_130_CompilerAllPlugins — download a proper plugin for your IDE, then in IDE go to Settings > Plugins > Install plugin from disk... and select the downloaded plugin. It should be considered as a dev build, so no guaranties on its stability, but so does the dev builds which are used in the new multiplatform samples (https://github.com/h0tk3y/k-new-mpp-samples), therefore nothing new here. If you want to update Gradle dependency as well, set it to 1.3.0-rc-26, with all the rest settings in the sample projects left as is, it should also work.

[spierce7]

thx