Format with alejandra

devshell/flake.nix

@@ -4,14 +4,20 @@
     utils.url = "github:numtide/flake-utils";
     devshell.url = "github:numtide/devshell";
   };
-  outputs = { self, nixpkgs, utils, devshell }:
+  outputs = {
+    self,
+    nixpkgs,
+    utils,
+    devshell,
+  }:
     utils.lib.eachDefaultSystem (system: {
       devShells.default = let
         pkgs = import nixpkgs {
           inherit system;
 
-          overlays = [ devshell.overlay ];
+          overlays = [devshell.overlay];
         };
-      in pkgs.devshell.mkShell { packages = with pkgs; [ ]; };
+      in
+        pkgs.devshell.mkShell {packages = with pkgs; [];};
     });
 }