Flake probably working now

flake.nix

@@ -14,37 +14,28 @@
     flake-utils.lib.eachDefaultSystem (
       system: let
         pkgs = nixpkgs.legacyPackages.${system};
-      in {
-        packages.default = pkgs.mkYarnPackage {
-          name = "kucinako";
+        frontend = pkgs.stdenv.mkDerivation (finalAttrs: {
+          pname = "kucinako";
+          version = "0.1";
           src = ./.;
-          packageJSON = ./package.json;
-          yarnLock = ./yarn.lock;
-
-          buildPhase = ''
-            export HOME=$(mktemp -d)
-            yarn --offline build
-          '';
-
-          installPhase = ''
-            mkdir -p $out
-            cp -r deps/kucinako/dist/* $out/
-          '';
-
-          # Ensure Parcel and other build tools are available
+          yarnOfflineCache = pkgs.fetchYarnDeps {
+            yarnLock = finalAttrs.src + "/yarn.lock";
+            hash = "sha256-g5g2xlwDxH8O8zaLJ4meO1+DQdJIomVPqd6RXTAhDuE=";
+          };
           nativeBuildInputs = with pkgs; [
+            yarnConfigHook
+            yarnBuildHook
+            # Needed for executing package.json scripts
             nodejs
-            yarn
-            nodePackages.typescript
-          ];
-        };
-
-        devShells.default = pkgs.mkShell {
-          buildInputs = with pkgs; [
-            nodejs
-            yarn
-            nodePackages.typescript
           ];
+          installPhase = ''
+            mkdir $out
+            mv dist/* $out
+          '';
+        });
+      in {
+        packages = {
+          default = frontend;
         };
       }
     );