diff --git a/release/packages/sets/src.ucl b/release/packages/sets/src.ucl
new file mode 100644
--- /dev/null
+++ b/release/packages/sets/src.ucl
@@ -0,0 +1,5 @@
+comment = "System source code"
+
+desc = <<EOD
+This metapackage installs source code for the base system and kernel.
+EOD
diff --git a/release/packages/ucl/src-all.ucl b/release/packages/ucl/src-all.ucl
--- a/release/packages/ucl/src-all.ucl
+++ b/release/packages/ucl/src-all.ucl
@@ -3,3 +3,7 @@
 The source code used to rebuild the system, located in /usr/src.
 This package includes everything except the kernel source code.
 EOD
+
+annotations {
+	set = src
+}
diff --git a/release/packages/ucl/src-sys-all.ucl b/release/packages/ucl/src-sys-all.ucl
--- a/release/packages/ucl/src-sys-all.ucl
+++ b/release/packages/ucl/src-sys-all.ucl
@@ -3,3 +3,7 @@
 The source code used to rebuild the system, located in /usr/src.
 This package includes the kernel source code.
 EOD
+
+annotations {
+	set = src
+}