Add a secrets module with some default SOPS stuff
diff --git a/modules/secrets.nix b/modules/secrets.nix
new file mode 100644
index 0000000..f891de7
--- /dev/null
+++ b/modules/secrets.nix
@@ -0,0 +1,8 @@
+{ pkgs, ... }: {
+    config = {
+        environment.systemPackages = with pkgs; [
+            sops
+        ];
+        sops.defaultSopsFile = ../secrets/secrets.json;
+    };
+}