added just file for convenience

flake.nix

@@ -11,26 +11,42 @@
   };
 
   # Flake outputs that other flakes can use
-  outputs = { self, flake-schemas, nixpkgs }:
+  outputs =
+    {
+      self,
+      flake-schemas,
+      nixpkgs,
+    }:
     let
       # Helpers for producing system-specific outputs
       supportedSystems = [ "x86_64-linux" ];
-      forEachSupportedSystem = f: nixpkgs.lib.genAttrs supportedSystems (system: f {
-        pkgs = import nixpkgs { inherit system; };
-      });
-    in {
+      forEachSupportedSystem =
+        f:
+        nixpkgs.lib.genAttrs supportedSystems (
+          system:
+          f {
+            pkgs = import nixpkgs { inherit system; };
+          }
+        );
+    in
+    {
       # Schemas tell Nix about the structure of your flake's outputs
       schemas = flake-schemas.schemas;
 
       # Development environments
-      devShells = forEachSupportedSystem ({ pkgs }: {
-        default = pkgs.mkShell {
-          # Pinned packages available in the environment
-          packages = with pkgs; [
-            go_1_23
-            nixpkgs-fmt
-          ];
-        };
-      });
+      devShells = forEachSupportedSystem (
+        { pkgs }:
+        {
+          default = pkgs.mkShell {
+            # Pinned packages available in the environment
+            packages = with pkgs; [
+              just
+              gcc
+              go_1_23
+              nixpkgs-fmt
+            ];
+          };
+        }
+      );
     };
 }