added nix dev shell

.envrc

@@ -0,0 +1 @@
+use flake

.gitignore

@@ -5,18 +5,19 @@ target/
 *.bak
 ~$*
 
-
 # Windows image file caches
 Thumbs.db
 
 # Windows folder config file
 Desktop.ini
 
-
 # Mac junk
 .DS_Store
 
-
 # IdeaJ
 *.idea
 *.iml
+
+# enviroemnt packages
+.direnv
+

flake.lock

@@ -0,0 +1,25 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1754725699,
+        "narHash": "sha256-iAcj9T/Y+3DBy2J0N+yF9XQQQ8IEb5swLFzs23CdP88=",
+        "rev": "85dbfc7aaf52ecb755f87e577ddbe6dbbdbc1054",
+        "revCount": 841808,
+        "type": "tarball",
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.841808%2Brev-85dbfc7aaf52ecb755f87e577ddbe6dbbdbc1054/01989280-4b63-70f9-95b3-49c511cb4d92/source.tar.gz"
+      },
+      "original": {
+        "type": "tarball",
+        "url": "https://flakehub.com/f/NixOS/nixpkgs/0.1"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,69 @@
+{
+  description = "A Nix-flake-based Java development environment";
+
+  inputs.nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/0.1";
+
+  outputs =
+    inputs:
+    let
+      javaVersion = 17;
+
+      supportedSystems = [
+        "x86_64-linux"
+        "aarch64-linux"
+        "x86_64-darwin"
+        "aarch64-darwin"
+      ];
+      forEachSupportedSystem =
+        f:
+        inputs.nixpkgs.lib.genAttrs supportedSystems (
+          system:
+          f {
+            pkgs = import inputs.nixpkgs {
+              inherit system;
+              overlays = [ inputs.self.overlays.default ];
+            };
+          }
+        );
+    in
+    {
+      overlays.default =
+        final: prev:
+        let
+          jdk = prev."jdk${toString javaVersion}";
+        in
+        {
+          inherit jdk;
+          maven = prev.maven.override { jdk_headless = jdk; };
+          gradle = prev.gradle.override { java = jdk; };
+          lombok = prev.lombok.override { inherit jdk; };
+        };
+
+      devShells = forEachSupportedSystem (
+        { pkgs }:
+        {
+          default = pkgs.mkShell {
+            packages = with pkgs; [
+              gcc
+              gradle
+              jdk
+              maven
+              ncurses
+              patchelf
+              zlib
+            ];
+
+            shellHook =
+              let
+                loadLombok = "-javaagent:${pkgs.lombok}/share/java/lombok.jar";
+                prev = "\${JAVA_TOOL_OPTIONS:+ $JAVA_TOOL_OPTIONS}";
+              in
+              ''
+                export JAVA_TOOL_OPTIONS="${loadLombok}${prev}"
+              '';
+          };
+        }
+      );
+    };
+}
+

shell.nix

@@ -0,0 +1,14 @@
+(
+  import
+  (
+    let
+      lock = builtins.fromJSON (builtins.readFile ./flake.lock);
+    in
+      fetchTarball {
+        url = lock.nodes.flake-compat.locked.url or "https://github.com/edolstra/flake-compat/archive/${lock.nodes.flake-compat.locked.rev}.tar.gz";
+        sha256 = lock.nodes.flake-compat.locked.narHash;
+      }
+  )
+  {src = ./.;}
+)
+.shellNix