Fix 'No value has been specified for this provider' error

tools/kotlin-native-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/experimental/plugins/KotlinNativeBasePlugin.kt

@@ -314,7 +314,6 @@ class KotlinNativeBasePlugin: Plugin<ProjectInternal> {
         // TODO: Deal with compiler downloading.
         // Apply base plugins
         project.pluginManager.apply(LifecycleBasePlugin::class.java)
-        project.pluginManager.apply(NativeBasePlugin::class.java)
 
         checkGradleMetadataFeature()
         checkGradleVersion()
@@ -322,6 +321,11 @@ class KotlinNativeBasePlugin: Plugin<ProjectInternal> {
 
         setUpMatchingStrategy()
         addCompilationTasks()
+
+        // The NativeBasePlugin accesses some properties which are set by the methods above
+        // (e.g. linkFile for libraries). Thus we have to apply it after setting there properties.
+        project.pluginManager.apply(NativeBasePlugin::class.java)
+
         addInteropTasks()
         addTargetInfoTask()
     }

tools/kotlin-native-gradle-plugin/src/test/kotlin/ExperimentalPluginTests.kt

@@ -316,6 +316,7 @@ class ExperimentalPluginTests {
                 plugins {
                     id 'kotlin-native'
                     id 'maven-publish'
+                    id 'signing'
                 }
 
                 group 'test'