diff --git a/checks/default.nix b/checks/default.nix
index 650148e..e809449 100644
--- a/checks/default.nix
+++ b/checks/default.nix
@@ -1,23 +1,38 @@
-{ inputs, self, lib, ... }: {
-  imports = [ inputs.treefmt-nix.flakeModule inputs.git-hooks-nix.flakeModule ];
+{
+  inputs,
+  self,
+  lib,
+  ...
+}:
+{
+  imports = [
+    inputs.treefmt-nix.flakeModule
+    inputs.git-hooks-nix.flakeModule
+  ];
 
-  perSystem = { pkgs, ... }: {
-    treefmt.config = {
-      projectRootFile = ".git/config";
-      programs.nixfmt.enable = true;
+  perSystem =
+    { pkgs, ... }:
+    {
+      treefmt.config = {
+        projectRootFile = ".git/config";
+        programs.nixfmt-rfc-style.enable = true;
+      };
+
+      pre-commit.settings.hooks = {
+        nixfmt-rfc-style.enable = true;
+      };
+
+      formatter = pkgs.nixfmt-rfc-style;
     };
 
-    pre-commit.settings.hooks = { nixfmt.enable = true; };
-
-    formatter = pkgs.nixfmt-rfc-style;
-  };
-
-  flake.checks = let build = _: nc: nc.config.system.build.toplevel;
-  in {
-    x86_64-linux =
-      lib.mapAttrs build { inherit (self.nixosConfigurations) picard; };
-    aarch64-linux = lib.mapAttrs build {
-      inherit (self.nixosConfigurations) sisko; # pbp;
+  flake.checks =
+    let
+      build = _: nc: nc.config.system.build.toplevel;
+    in
+    {
+      x86_64-linux = lib.mapAttrs build { inherit (self.nixosConfigurations) picard; };
+      aarch64-linux = lib.mapAttrs build {
+        inherit (self.nixosConfigurations) sisko; # pbp;
+      };
     };
-  };
 }