Make paths relative

Change-Id: Iefdf9b2a0313bbdc0532450bb10ca9b7cca41014

build-logic/convention/src/main/kotlin/com/google/samples/apps/nowinandroid/AndroidCompose.kt

@@ -58,11 +58,11 @@ internal fun Project.configureAndroidCompose(
 private fun Project.buildComposeMetricsParameters(): List<String> {
     val metricParameters = mutableListOf<String>()
     val enableMetricsProvider = project.providers.gradleProperty("enableComposeCompilerMetrics")
-    val projectPath = project.path.replace(':', '_').drop(1)
+    val relativePath = projectDir.relativeTo(rootDir)
 
     val enableMetrics = (enableMetricsProvider.orNull == "true")
     if (enableMetrics) {
-        val metricsFolder = rootProject.buildDir.resolve("compose-metrics/$projectPath")
+        val metricsFolder = rootProject.buildDir.resolve("compose-metrics").resolve(relativePath)
         metricParameters.add("-P")
         metricParameters.add(
             "plugin:androidx.compose.compiler.plugins.kotlin:metricsDestination=" + metricsFolder.absolutePath
@@ -72,7 +72,7 @@ private fun Project.buildComposeMetricsParameters(): List<String> {
     val enableReportsProvider = project.providers.gradleProperty("enableComposeCompilerReports")
     val enableReports = (enableReportsProvider.orNull == "true")
     if (enableReports) {
-        val reportsFolder = rootProject.buildDir.resolve("compose-reports/$projectPath")
+        val reportsFolder = rootProject.buildDir.resolve("compose-reports").resolve(relativePath)
         metricParameters.add("-P")
         metricParameters.add(
             "plugin:androidx.compose.compiler.plugins.kotlin:reportsDestination=" + reportsFolder.absolutePath