diff --git a/flake.nix b/flake.nix
index 52c621f..6aebb74 100644
--- a/flake.nix
+++ b/flake.nix
@@ -15,20 +15,10 @@
     ];
 
     forAllSystems = f: nixpkgs.lib.genAttrs systems (system: f system);
-#    forAllSystems = fn: nixpkgs.lib.genAttrs systems (system: forSystem system fn);
   in {
-    checks = forAllSystems ({
-      pkgs,
-      lib,
-      ...
-    }: {
-      alejandra = pkgs.runCommand "check-alejandra" {} ''
-        ${lib.getExe pkgs.alejandra} --check ${./.}
-        touch $out
-      '';
-    });
-
-    devShells = forAllSystems (pkgs: {
+    devShells = forAllSystems (system: let
+      pkgs = nixpkgs.legacyPackages.${system};
+    in {
       default = pkgs.mkShell {
         packages = with pkgs; [
           # base toolchain
@@ -46,8 +36,9 @@
       };
     });
 
-    formatter = forAllSystems (pkgs: pkgs.alejandra);
-
+    formatter = forAllSystems (system: let
+      pkgs = nixpkgs.legacyPackages.${system};
+      in pkgs.alejandra);
     packages = forAllSystems (system: let
       pkgs = nixpkgs.legacyPackages.${system};
       swaymux-pkg = (pkgs.qt6Packages.callPackage ./nix/default.nix {});