Move Gradle build logic to a setup hook

plugin/gradle8/src/main/kotlin/DependencyExtractor.gradle8.kt

@@ -18,12 +18,14 @@ object DependencyExtractorApplierG8 : DependencyExtractorApplier {
         extractor: DependencyExtractor,
     ) {
         val serviceProvider =
-            gradle.sharedServices.registerIfAbsent(
-                "nixDependencyExtractor",
-                DependencyExtractorService::class.java,
-            ) {}.map { service ->
-                service.apply { this.extractor = extractor }
-            }
+            gradle.sharedServices
+                .registerIfAbsent(
+                    "nixDependencyExtractor",
+                    DependencyExtractorService::class.java,
+                ) {}
+                .map { service ->
+                    service.apply { this.extractor = extractor }
+                }
 
         gradle.service<BuildEventListenerRegistryInternal>().onOperationCompletion(serviceProvider)
     }
@@ -31,7 +33,9 @@ object DependencyExtractorApplierG8 : DependencyExtractorApplier {
 
 @Suppress("UnstableApiUsage")
 internal abstract class DependencyExtractorService :
-    BuildService<BuildServiceParameters.None>, BuildOperationListener, AutoCloseable {
+    BuildService<BuildServiceParameters.None>,
+    BuildOperationListener,
+    AutoCloseable {
     var extractor: DependencyExtractor? = null
 
     override fun started(

plugin/gradle8/src/main/kotlin/ResolveAllArtifacts.gradle8.kt

@@ -23,13 +23,12 @@ abstract class ResolveProjectDependenciesTaskG8
     ) : ResolveProjectDependenciesTask() {
         private val artifactFiles = Cached.of { artifactFiles() }
 
-        private fun artifactFiles(): FileCollection {
-            return objects.fileCollection().from(
+        private fun artifactFiles(): FileCollection =
+            objects.fileCollection().from(
                 getReportableConfigurations().map { configuration ->
                     configuration.artifactFiles()
                 },
             )
-        }
 
         @TaskAction
         fun action() {