From c12970561f2eba44b1e5d5748e3ab57a963b0775 Mon Sep 17 00:00:00 2001
From: Ryan Harter <rharter@dropbox.com>
Date: Mon, 9 Dec 2024 16:50:59 -0600
Subject: [PATCH] Adds alternative build directory.

---
 dropshots-gradle-plugin/build.gradle.kts | 10 +++++++++-
 model/build.gradle.kts                   |  9 +++++++++
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/dropshots-gradle-plugin/build.gradle.kts b/dropshots-gradle-plugin/build.gradle.kts
index faf4fd5..5848768 100644
--- a/dropshots-gradle-plugin/build.gradle.kts
+++ b/dropshots-gradle-plugin/build.gradle.kts
@@ -8,12 +8,20 @@ plugins {
   alias(libs.plugins.dokka)
   alias(libs.plugins.binaryCompatibilityValidator)
 }
-
+// This module is included in two projects:
+// - In the root project where it's released as one of our artifacts
+// - In build-logic project where we can use it for the runtime and samples.
+//
+// We only want to publish when it's being built in the root project.
 if (rootProject.name == "dropshots-root") {
   apply(plugin = libs.plugins.mavenPublish.get().pluginId)
   extensions.configure<MavenPublishBaseExtension> {
     configure(GradlePlugin(Dokka("dokkaJavadoc")))
   }
+} else {
+  // Move the build directory when included in build-support so as to not poison the real build.
+  // If we don't the configuration cache is broken and all tasks are considered not up-to-date.
+  layout.buildDirectory = File(rootDir, "build/dropshots-gradle-plugin")
 }
 
 val generateVersionTask = tasks.register("generateVersion") {
diff --git a/model/build.gradle.kts b/model/build.gradle.kts
index f172bfe..df67e1c 100644
--- a/model/build.gradle.kts
+++ b/model/build.gradle.kts
@@ -5,8 +5,17 @@ plugins {
   alias(libs.plugins.binaryCompatibilityValidator)
 }
 
+// This module is included in two projects:
+// - In the root project where it's released as one of our artifacts
+// - In build-logic project where we can use it for the runtime and samples.
+//
+// We only want to publish when it's being built in the root project.
 if (rootProject.name == "dropshots-root") {
   apply(plugin = libs.plugins.mavenPublish.get().pluginId)
+} else {
+  // Move the build directory when included in build-support so as to not poison the real build.
+  // If we don't the configuration cache is broken and all tasks are considered not up-to-date.
+  layout.buildDirectory = File(rootDir, "build/model")
 }
 
 kotlin {