diff --git a/module.nix b/module.nix
index 10bb8b6..f41f590 100644
--- a/module.nix
+++ b/module.nix
@@ -6,6 +6,14 @@ in
 {
   options.repo-clone = {
     enable = lib.mkEnableOption "repo-clone service";
+
+    repos = lib.mkOption {
+      type = import ./repo.nix { inherit lib; };
+      description = ''
+        attribute set of repos to clone
+      '';
+      default = { };
+    };
   };
 
 
diff --git a/repo.nix b/repo.nix
new file mode 100644
index 0000000..f57106a
--- /dev/null
+++ b/repo.nix
@@ -0,0 +1,10 @@
+{ lib, ... }:
+
+let
+  inherit (lib)
+    types;
+in
+types.attrsOf (types.submodule ({ ... }: {
+  options = { };
+  config = { };
+}))