From 570ca30f69289efdedbb6e452b693394d156c570 Mon Sep 17 00:00:00 2001
From: eugene yokota <eed3si9n@gmail.com>
Date: Tue, 13 Jan 2026 04:28:27 -0500
Subject: [PATCH] [2.x] test: Test -Werror in metabuild (#8510)

**Problem**
-Werror in the metabuild didn't work on sbt 1.x.

**Solution**
This adds test for it on sbt 2.x.
---
 sbt-app/src/sbt-test/project-load/werror/build.sbt         | 6 ++++++
 sbt-app/src/sbt-test/project-load/werror/changes/build.sbt | 6 ++++++
 sbt-app/src/sbt-test/project-load/werror/changes/p.sbt     | 1 +
 sbt-app/src/sbt-test/project-load/werror/test              | 6 ++++++
 4 files changed, 19 insertions(+)
 create mode 100644 sbt-app/src/sbt-test/project-load/werror/build.sbt
 create mode 100644 sbt-app/src/sbt-test/project-load/werror/changes/build.sbt
 create mode 100644 sbt-app/src/sbt-test/project-load/werror/changes/p.sbt
 create mode 100644 sbt-app/src/sbt-test/project-load/werror/test

diff --git a/sbt-app/src/sbt-test/project-load/werror/build.sbt b/sbt-app/src/sbt-test/project-load/werror/build.sbt
new file mode 100644
index 000000000..84a4df0dd
--- /dev/null
+++ b/sbt-app/src/sbt-test/project-load/werror/build.sbt
@@ -0,0 +1,6 @@
+scalaVersion := "3.7.4"
+
+@deprecated
+def foo = true
+
+fork := foo
diff --git a/sbt-app/src/sbt-test/project-load/werror/changes/build.sbt b/sbt-app/src/sbt-test/project-load/werror/changes/build.sbt
new file mode 100644
index 000000000..db42926ed
--- /dev/null
+++ b/sbt-app/src/sbt-test/project-load/werror/changes/build.sbt
@@ -0,0 +1,6 @@
+scalaVersion := "3.7.4"
+
+@deprecated
+def foo = true
+
+fork := !foo
diff --git a/sbt-app/src/sbt-test/project-load/werror/changes/p.sbt b/sbt-app/src/sbt-test/project-load/werror/changes/p.sbt
new file mode 100644
index 000000000..7c99ad44a
--- /dev/null
+++ b/sbt-app/src/sbt-test/project-load/werror/changes/p.sbt
@@ -0,0 +1 @@
+scalacOptions += "-Werror"
diff --git a/sbt-app/src/sbt-test/project-load/werror/test b/sbt-app/src/sbt-test/project-load/werror/test
new file mode 100644
index 000000000..7b9adfd60
--- /dev/null
+++ b/sbt-app/src/sbt-test/project-load/werror/test
@@ -0,0 +1,6 @@
+> name
+
+$ copy-file changes/p.sbt project/p.sbt
+$ copy-file changes/build.sbt build.sbt
+
+-> reload