Flaked it up

backend/flake.nix

@@ -0,0 +1,35 @@
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, flake-utils }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let pkgs = nixpkgs.legacyPackages.${system};
+      in {
+        devShell = pkgs.mkShell {
+          buildInputs = with pkgs; [
+            jdk25
+            gradle
+          ];
+        shellHook = ''
+          mkdir -p .vscode
+
+          cat <<EOF > .vscode/settings.json
+          {
+            "java.compile.nullAnalysis.mode": "disabled",
+            "gradle.reuseTerminals": "all",
+            "java.import.gradle.java.home": "${pkgs.jdk25}/lib/openjdk",
+            "java.import.gradle.home": "${pkgs.gradle}/libexec/gradle",
+            "java.import.gradle.wrapper.enabled": false
+          }
+          EOF
+
+
+          echo Java Flake development environment ready!
+        '';
+        };
+      }
+    );
+}