diff --git a/makefu/2configs/unstable-sources.nix b/makefu/2configs/unstable-sources.nix
new file mode 100644
index 000000000..f2d28dcaf
--- /dev/null
+++ b/makefu/2configs/unstable-sources.nix
@@ -0,0 +1,19 @@
+{ config, lib, pkgs, ... }:
+
+{
+  krebs.build.source = {
+    git.nixpkgs = {
+      url = https://github.com/makefu/nixpkgs;
+      rev = "984d33884d63d404ff2da76920b8bc8b15471552";
+    };
+
+    dir.secrets = {
+      host = config.krebs.hosts.pornocauster;
+      path = "/home/makefu/secrets/${config.krebs.build.host.name}/";
+    };
+    dir.stockholm = {
+      host = config.krebs.hosts.pornocauster;
+      path = toString ../.. ;
+    };
+  };
+}