Adding external Libraries

Rainer

Hi there,

I'm new to Kotlin and very new to KorGE. I tried to read JSON-Data in a KorGE application, but can't get any library to work.
Right now I tried to use the kotlinx-serilization and added this classpath to the dependency-section of the standard KorGE build.gradle.kts file:
```
classpath( "org.jetbrains.kotlinx:kotlinx-serialization-runtime:0.20.0")


Gradle downloads the dependency, but the libs don't appear in the external Libraries and I can't reference anthing in the code.

I'm not set on this specific lib, anything that can parse Json to classes would be welcome.

I couldn't find any examples where KorGE-Applications use other libraries, so I'm kind of stuck. Any help would be great.

Thanks a lot,
Rainer

Михаил Лобачевский

I also did not find the answer in the documentation. The solution helped me:
(build.gradle.kts)

korge {

id = "com.example.example"
version = "0.0.1"
name = "testapp"

dependencyMulti("casper.types:typesKt:1.0.1")

}
There is probably a simpler and more obvious solution. but the gradle is hard for me

Rainer

Thanks for this tip, but I still struggle with the gradle part.
When I add the lib like this:

   korge {
   id = "test"
   dependencyMulti("org.jetbrains.kotlinx:kotlinx-serialization-runtime:0.20.0")
}

I still can't get it to work. I can't reference it in the code, an when I use the run-korge task, I get this error

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':genResources'.
> Could not resolve all files for configuration ':detachedConfiguration1'.
   > Could not find org.jetbrains.kotlinx:kotlinx-serialization-runtime-jvm:0.20.0.
     Searched in the following locations:
       - file:/home/rainer/.m2/repository/org/jetbrains/kotlinx/kotlinx-serialization-runtime-jvm/0.20.0/kotlinx-serialization-runtime-jvm-0.20.0.pom
       - https://dl.bintray.com/korlibs/korlibs/org/jetbrains/kotlinx/kotlinx-serialization-runtime-jvm/0.20.0/kotlinx-serialization-runtime-jvm-0.20.0.pom
       - https://jcenter.bintray.com/org/jetbrains/kotlinx/kotlinx-serialization-runtime-jvm/0.20.0/kotlinx-serialization-runtime-jvm-0.20.0.pom
       - https://repo.maven.apache.org/maven2/org/jetbrains/kotlinx/kotlinx-serialization-runtime-jvm/0.20.0/kotlinx-serialization-runtime-jvm-0.20.0.pom
     Required by:
         project :

I suspect the multiplatform, or the korge plugin rename the lib from kotlinx-serialization-runtime:0.20.0 to kotlinx-serialization-runtime-jvm-0.20.0
but I have no workaround for this.

So any help would be great.

Thanks,
Rainer

Nico

did you try it like this:

https://github.com/emign/libEmi_Template/blob/3b7ef639b2140116099bda1d4bf094ac96795101/build.gradle.kts#L27

Михаил Лобачевский

I think we need to wait for the author’s response.
All proposed solutions do not work in particular when trying to build an android.

Rainer

Thanks for the support, but I haven't been successful yet.

I started a new projet in Intellij and used the korge defaults.
Then I added this to the build.grade.kts (Nicos tipp):

repositories {
	mavenCentral()
	mavenLocal()
}

dependencies {
	add("commonMainApi", dependencyNotation = "org.jetbrains.kotlinx:kotlinx-serialization-runtime:0.20.0")
}

At this stage I can build and run (korge-runjvm) the project. Also the kotlinx.serilization,runtime lib is visible in the external libraries.

But as soon as I want to use the library in the main.kt, like adding

val j = Json(JsonConfiguration.Default)

IntelliJ cannot find the classes.
I also cannot import the stuff by hand:

import kotlinx.serialization.json.Json
import kotlinx.serialization.json.JsonConfiguration

results in "unresoved reference: serilization"

I'm sorry, but I really struggle with the gradle-tooling here. I find it very hard to find references, let alone understand the connections of gradle, gradle.kotlin, gradle-kroge-plugin and the use of the different scopes and notations in all of them.

So if there are any more ideas, I'm still interrested in trying

Thanks a lot,
Rainer

soywiz

Have a look to this build.gradle:

https://github.com/mmo-poc/mmo-poc/blob/master/build.gradle

For kotlinx serializaiton, you have to apply the plugin and include a few artifacts

Rainer

Thanks for this hint.

I added the kotlinx serilization and appled the plugin, resulting in this build.gradle.kts:

import com.soywiz.korge.gradle.*

buildscript {
	val korgeVersion: String by project
	val kotlinVersion: String by project

	repositories {
		mavenLocal()
		maven { url = uri("https://dl.bintray.com/korlibs/korlibs") }
		maven { url = uri("https://plugins.gradle.org/m2/") }
		maven { url = uri( "https://dl.bintray.com/kotlin/kotlin-dev/")}
		mavenCentral()
	}
	dependencies {
		classpath("com.soywiz.korlibs.korge.plugins:korge-gradle-plugin:1.13.2.3")
		classpath("org.jetbrains.kotlin:kotlin-serialization:$kotlinVersion")
	}
}

apply<KorgeGradlePlugin>()
apply(plugin = "kotlinx-serialization")

korge {
	id = "com.example.example"
}

repositories {
	mavenCentral()
	mavenLocal()
}

dependencies {
	add("commonMainApi", dependencyNotation = "org.jetbrains.kotlinx:kotlinx-serialization-runtime:0.20.0")
}

But this wasn't enough, as I still cannot use the lib in the main.kt

I think I'm missing this part, using implementation, from the given example:

subprojects {
    apply plugin: "kotlin-multiplatform"
    apply plugin: "kotlinx-serialization"

    kotlin {
        jvm {
        ...
            }
        }
        js {
         ...
        }

        sourceSets {
            commonMain {
                dependencies {
                    implementation kotlin('stdlib-common')
                    implementation "org.jetbrains.kotlinx:kotlinx-serialization-runtime-common:$serializationRuntimeVersion"
...

But I faild to include something equivalent in my build.gradle.kts.
I also tried to use the build,gradle from the example and adapt it, but gave up after several attempts...
Maybe I have to do some serious research on gradle, gradle-kotlin-dsl and the gradle korge plugin, before I try this again...

Thanks for all the help!
Rainer

tsaulic

I have the same issue. I was able to get my package to download via

repositories {
	// https://stackoverflow.com/questions/59413364/upgrading-from-gradle-5-1-1-to-6-0-1-breaks-kotlin-multiplatform-build
	jcenter {
		metadataSources {
			gradleMetadata()
			mavenPom()
		}
	}
	jcenter()
}

dependencies {
	add("commonMainApi", "com.github.glwithu06.semver:semver:1.0.1")
}

but I cannot resolve it in my code, it's like it's not on the classpath
I also tried using

plugins {
	java
}

dependencies {
	implementation("com.github.glwithu06.semver:semver:1.0.1")
}

but does not even add it to my external dependencies (although it's downloaded and it's in my modules-2 gradle cache folder along with sources jar, main jar and pom.xml

any ideas?