Multiplatform support for kotlinx-rpc-krpc-ktor-server module

[smyrgeorge]

Is your feature request related to a problem? Please describe.
I was trying to build my project, that uses the kotlinx-rpc-krpc-ktor-server, for macosArm64 target.
I'm getting the following error:

Could not determine the dependencies of task ':actor4k-cluster:linkDebugExecutableMacosArm64'.
> Could not resolve all dependencies for configuration ':actor4k-cluster:macosArm64CompileKlibraries'.
   > Could not resolve org.jetbrains.kotlinx:kotlinx-rpc-krpc-ktor-server:0.5.1.
     Required by:
         project :actor4k-cluster
      > No matching variant of org.jetbrains.kotlinx:kotlinx-rpc-krpc-ktor-server:0.5.1 was found. The consumer was configured to find a library for use during 'kotlin-api', preferably optimized for non-jvm, as well as attribute 'org.jetbrains.kotlin.klib.packaging' with value 'non-packed', attribute 'org.jetbrains.kotlin.native.target' with value 'macos_arm64', attribute 'org.jetbrains.kotlin.platform.type' with value 'native' but:
          - Variant 'jvmApiElements-published' declares a library for use during compile-time, preferably optimized for standard JVMs:
              - Incompatible because this component declares a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'jvm' and the consumer needed a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'native'
              - Other compatible attributes:
                  - Doesn't say anything about org.jetbrains.kotlin.klib.packaging (required 'non-packed')
                  - Doesn't say anything about org.jetbrains.kotlin.native.target (required 'macos_arm64')
          - Variant 'jvmRuntimeElements-published' declares a library for use during runtime, preferably optimized for standard JVMs:
              - Incompatible because this component declares a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'jvm' and the consumer needed a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'native'
              - Other compatible attributes:
                  - Doesn't say anything about org.jetbrains.kotlin.klib.packaging (required 'non-packed')
                  - Doesn't say anything about org.jetbrains.kotlin.native.target (required 'macos_arm64')
          - Variant 'jvmSourcesElements-published' declares a component for use during runtime, preferably optimized for standard JVMs:
              - Incompatible because this component declares documentation, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'jvm' and the consumer needed a library, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'native'
              - Other compatible attributes:
                  - Doesn't say anything about org.jetbrains.kotlin.klib.packaging (required 'non-packed')
                  - Doesn't say anything about org.jetbrains.kotlin.native.target (required 'macos_arm64')
          - Variant 'metadataApiElements' declares a library, preferably optimized for non-jvm:
              - Incompatible because this component declares a component for use during 'kotlin-metadata', as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'common' and the consumer needed a component for use during 'kotlin-api', as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'native'
              - Other compatible attributes:
                  - Doesn't say anything about org.jetbrains.kotlin.klib.packaging (required 'non-packed')
                  - Doesn't say anything about org.jetbrains.kotlin.native.target (required 'macos_arm64')
          - Variant 'metadataSourcesElements' declares a component, preferably optimized for non-jvm:
              - Incompatible because this component declares documentation for use during 'kotlin-runtime', as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'common' and the consumer needed a library for use during 'kotlin-api', as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'native'
              - Other compatible attributes:
                  - Doesn't say anything about org.jetbrains.kotlin.klib.packaging (required 'non-packed')
                  - Doesn't say anything about org.jetbrains.kotlin.native.target (required 'macos_arm64')
          - Variant 'wasmJsApiElements-published' declares a library for use during 'kotlin-api', preferably optimized for non-jvm:
              - Incompatible because this component declares a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'wasm' and the consumer needed a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'native'
              - Other compatible attributes:
                  - Doesn't say anything about org.jetbrains.kotlin.klib.packaging (required 'non-packed')
                  - Doesn't say anything about org.jetbrains.kotlin.native.target (required 'macos_arm64')
          - Variant 'wasmJsRuntimeElements-published' declares a library, preferably optimized for non-jvm:
              - Incompatible because this component declares a component for use during 'kotlin-runtime', as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'wasm' and the consumer needed a component for use during 'kotlin-api', as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'native'
              - Other compatible attributes:
                  - Doesn't say anything about org.jetbrains.kotlin.klib.packaging (required 'non-packed')
                  - Doesn't say anything about org.jetbrains.kotlin.native.target (required 'macos_arm64')
          - Variant 'wasmJsSourcesElements-published' declares a component, preferably optimized for non-jvm:
              - Incompatible because this component declares documentation for use during 'kotlin-runtime', as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'wasm' and the consumer needed a library for use during 'kotlin-api', as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'native'
              - Other compatible attributes:
                  - Doesn't say anything about org.jetbrains.kotlin.klib.packaging (required 'non-packed')
                  - Doesn't say anything about org.jetbrains.kotlin.native.target (required 'macos_arm64')

I saw in the source code of krpc that this module only has jvmManin sourceset: https://github.com/Kotlin/kotlinx-rpc/tree/main/krpc/krpc-ktor/krpc-ktor-server.
The krpc-ktor-client has commonMain though.

Describe the solution you'd like
I would like to be able to use this module for non-jvm targets (like native target for example).

Describe alternatives you've considered
I tried to change the jvmMain to commonMain (also I made the change to the build.gradle.kts file) and rebuild the krpc project, but it failed. It seems that other libraries have the same issue (only support jvm).

* What went wrong:
Could not determine the dependencies of task ':kotlinNpmInstall'.
> Could not resolve all dependencies for configuration ':krpc:krpc-ktor:krpc-ktor-server:wasmJsNpmAggregated'.
   > Could not find io.ktor:ktor-server-core-wasm-js:3.0.3.
     Searched in the following locations:
       - https://packages.jetbrains.team/maven/p/krpc/build-deps/io/ktor/ktor-server-core-wasm-js/3.0.3/ktor-server-core-wasm-js-3.0.3.pom
       - https://packages.jetbrains.team/maven/p/krpc/build-deps-eap/io/ktor/ktor-server-core-wasm-js/3.0.3/ktor-server-core-wasm-js-3.0.3.pom
       - file:/Users/smyrgeorge/dev/projects/test/kotlinx-rpc/lib-kotlin/io/ktor/ktor-server-core-wasm-js/3.0.3/ktor-server-core-wasm-js-3.0.3.pom
     Required by:
         project :krpc:krpc-ktor:krpc-ktor-server > io.ktor:ktor-server-core:3.0.3
   > Could not find io.ktor:ktor-server-websockets-wasm-js:3.0.3.
     Searched in the following locations:
       - https://packages.jetbrains.team/maven/p/krpc/build-deps/io/ktor/ktor-server-websockets-wasm-js/3.0.3/ktor-server-websockets-wasm-js-3.0.3.pom
       - https://packages.jetbrains.team/maven/p/krpc/build-deps-eap/io/ktor/ktor-server-websockets-wasm-js/3.0.3/ktor-server-websockets-wasm-js-3.0.3.pom
       - file:/Users/smyrgeorge/dev/projects/test/kotlinx-rpc/lib-kotlin/io/ktor/ktor-server-websockets-wasm-js/3.0.3/ktor-server-websockets-wasm-js-3.0.3.pom
     Required by:
         project :krpc:krpc-ktor:krpc-ktor-server > io.ktor:ktor-server-websockets:3.0.3

From the error, I understand that there is no support for ktor-server-websockets in wasmJs, which it totally understandable. What we can do in this case?

Additional context
If needed, I can provide more context.
Also, If you have in mind a desired solution for this, let me know and I can provide a PR.

[Mr3zee]

Aiming for 0.6.0

[Mr3zee]

Just a heads up - it failed because proxy we use doesn't allow to download new dependencies for external contributors. So the upgrade went just fine. In future, if you want to try out development with dependencies change use kotlinx.rpc.useProxyRepositories=false Gradle property in local.properties file for example

[smyrgeorge]

Thanks a lot for your reply!
It failed to built, you meant the krpc project right?
So, if I had kotlinx.rpc.useProxyRepositories=false this property in my local.properties file it would have succed?
In that case I can provide a PR with the solution if you want.

[Mr3zee]

@smyrgeorge that's no problem, I just did the PR, though thank you for pointing out the issue and your suggestion!

So, if I had kotlinx.rpc.useProxyRepositories=false this property in my local.properties file it would have succed?

It should. If not, probably something is wrong in configs. Right now it will succeed anyway, as I downloaded these dependencies in proxy

[smyrgeorge]

Thanks a lot 🙂. Should I close this issue now?

[Mr3zee]

It will close automatically when PR is merged, no need, thank you

[thisAAY]

Is there any timeline for the release?

[Mr3zee]

This week, probably