diff --git a/default.nix b/default.nix
index 635c13a..a71d179 100644
--- a/default.nix
+++ b/default.nix
@@ -1,10 +1,14 @@
-{ sources ? import ./nix/sources.nix, system ? builtins.currentSystem
-, crossSystem ? null, config ? { }
-, alejandraUnstable ? (import sources.nixpkgsUnstable { }).alejandra
-, cardanoNodeProject ? import sources.cardano-node { } }@args:
+{
+  sources ? import ./nix/sources.nix,
+  system ? builtins.currentSystem,
+  crossSystem ? null,
+  config ? {},
+  alejandraUnstable ? (import sources.nixpkgsUnstable {}).alejandra,
+  cardanoNodeProject ? import sources.cardano-node {},
+} @ args:
 with import ./nix args; {
   shell = mkShell {
-    inherit (import sources.niv { }) niv;
+    inherit (import sources.niv {}) niv;
     buildInputs = [
       alejandraUnstable # The Uncompromising Nix Code Formatter
       cardanoNodeProject.cardano-cli # required for KES key rotation