refactor(stack): Migrate from Jackson to KxS

Signed-off-by: Frank Viernau <[email protected]>

plugins/package-managers/stack/build.gradle.kts

@@ -20,6 +20,9 @@
 plugins {
     // Apply precompiled plugins.
     id("ort-library-conventions")
+
+    // Apply third-party plugins.
+    alias(libs.plugins.kotlinSerialization)
 }
 
 dependencies {
@@ -37,10 +40,8 @@ dependencies {
     implementation(projects.utils.ortUtils)
     implementation(projects.utils.spdxUtils)
 
-    implementation(libs.jackson.annotations)
-    implementation(libs.jackson.core)
-    implementation(libs.jackson.databind)
-    implementation(libs.jackson.module.kotlin)
+    implementation(libs.kotlinx.serialization.core)
+    implementation(libs.kotlinx.serialization.json)
 
     funTestImplementation(testFixtures(projects.analyzer))
 }

plugins/package-managers/stack/src/main/kotlin/Model.kt

@@ -19,12 +19,12 @@
 
 package org.ossreviewtoolkit.plugins.packagemanagers.stack
 
-import com.fasterxml.jackson.annotation.JsonIgnoreProperties
-import com.fasterxml.jackson.module.kotlin.readValue
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.json.Json
 
-import org.ossreviewtoolkit.model.jsonMapper
+private val JSON = Json { ignoreUnknownKeys = true }
 
-@JsonIgnoreProperties(ignoreUnknown = true)
+@Serializable
 internal data class Location(
     val url: String,
     val type: String
@@ -35,7 +35,7 @@ internal data class Location(
     }
 }
 
-@JsonIgnoreProperties(ignoreUnknown = true)
+@Serializable
 internal data class Dependency(
     val name: String,
     val version: String,
@@ -44,4 +44,4 @@ internal data class Dependency(
     val dependencies: List<String> = emptyList()
 )
 
-internal fun String.parseDependencies() = jsonMapper.readValue<List<Dependency>>(this)
+internal fun String.parseDependencies() = JSON.decodeFromString<List<Dependency>>(this)