Rewrite based on code from the GitHub Dependency Graph Gradle Plugin

fixtures/dependency/maven-bom/kotlin/build.gradle.kts

@@ -3,10 +3,10 @@ plugins {
 }
 
 repositories {
-    maven { url = uri("http://localhost:9999") }
+    maven { url = uri(System.getProperty("org.nixos.gradle2nix.m2")) }
 }
 
 dependencies {
     implementation(platform("io.micrometer:micrometer-bom:1.5.1"))
     implementation("io.micrometer:micrometer-core")
-}
+}