Merge pull request #2 from magaransoft/1-add-nix-flake-devshell

Add Nix flake devshell with direnv

Author: NovaMage

.gitignore

@@ -51,3 +51,5 @@ metals.sbt
 # Claude Code
 .claude/
 MEMORY.md
+.envrc
+.direnv/

flake.lock

@@ -0,0 +1,26 @@
+{
+  description = "Dev environment";
+
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+
+  outputs = { self, nixpkgs }:
+    let
+      supportedSystems = [ "x86_64-linux" "aarch64-linux" ];
+      forEachSystem = f: builtins.listToAttrs (map (system: {
+        name = system;
+        value = f system;
+      }) supportedSystems);
+    in {
+      devShells = forEachSystem (system:
+        let pkgs = nixpkgs.legacyPackages.${system};
+        in {
+          default = pkgs.mkShell {
+            buildInputs = with pkgs; [ jdk21 sbt ];
+            shellHook = ''
+              export JAVA_HOME="${pkgs.jdk21}"
+            '';
+          };
+        }
+      );
+    };
+}