diff --git a/testpkgs/slow2/slow-build.sh b/testpkgs/slow2/slow-build.sh
new file mode 100755
index 0000000000..99e18c0fb7
--- /dev/null
+++ b/testpkgs/slow2/slow-build.sh
@@ -0,0 +1,14 @@
+#! /bin/sh
+
+echo "builder started..."
+
+for i in $(seq 1 30); do
+    echo $i
+    sleep 1
+done
+
+mkdir $out
+
+echo "done" > $out/bla
+
+echo "builder finished"
diff --git a/testpkgs/slow2/slow.fix b/testpkgs/slow2/slow.fix
new file mode 100644
index 0000000000..52666951fd
--- /dev/null
+++ b/testpkgs/slow2/slow.fix
@@ -0,0 +1,5 @@
+Package(
+  [ ("name", "slow")
+  , ("build", Relative("slow2/slow-build.sh"))
+  ]
+)