Merge pull request 'add cargo to dev shell' (#39) from nix-update-dev-shell into main

Reviewed-on: #39

flake.nix

@@ -24,16 +24,19 @@
             packages = with pkgs; [
               corepack_latest
               nodejs
+              cargo
+              clippy
             ];
           };
         }
       );
-      formatter = forSystems (
+      packages = forSystems (
         system:
         let
           pkgs = pkgs' system;
         in
-        pkgs.treefmt.withConfig {
+        {
+          fmt = pkgs.treefmt.withConfig {
             runtimeInputs = with pkgs; [
               nixfmt-rfc-style
               nodePackages.prettier
@@ -75,7 +78,15 @@
                 };
               };
             };
+          };
         }
       );
+      formatter = forSystems (
+        system:
+        let
+          pkgs = pkgs' system;
+        in
+        self.outputs.packages.${system}.fmt
+      );
     };
 }