diff --git a/nix/overlay.nix b/nix/overlay.nix
new file mode 100644
index 00000000..f1a7cb13
--- /dev/null
+++ b/nix/overlay.nix
@@ -0,0 +1,25 @@
+{ filter, self, ... }:
+final: prev: {
+	bcachefs = {
+		tools = final.callPackage ../default.nix {
+			testWithValgrind = false;
+			filter = filter.lib;
+			lastModified = builtins.substring 0 8 self.lastModifiedDate;
+			versionString = self.version;
+		};
+		toolsValgrind = final.bcachefs.tools.override {
+			testWithValgrind = true;
+		};
+		toolsDebug = final.bcachefs.toolsValgrind.override {
+			debugMode = true;
+		};
+
+		kernelPackages = final.recurseIntoAttrs (final.linuxPackagesFor final.bcachefs.kernel);
+		kernel = final.callPackage ./bcachefs-kernel.nix {
+			commit = final.bcachefs.tools.bcachefs_revision;
+			# This needs to be recalculated for every revision change
+			diffHash = "sha256-JrVRkEO7DKUTf+qhjWPwfbF3a/Qbd8me7oGay4aae3k=";
+			kernelPatches = [];
+		};
+	};
+}