Create Nix flake devshell

Author: MichailiK

.gitignore

@@ -1,7 +1,8 @@
+/.direnv/
 /nbproject/
 /target/
 /Playlists/
 /test/
 *.json
 *.txt
-nb*.xml
+nb*.xml

flake.lock

@@ -0,0 +1,20 @@
+{
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-23.11";
+  };
+  outputs = {
+    self,
+    nixpkgs,
+  }: let
+    mapPkgsForEachSystem = callback:
+      nixpkgs.lib.genAttrs
+      nixpkgs.lib.systems.flakeExposed
+      (system: callback nixpkgs.legacyPackages.${system});
+  in {
+    devShells = mapPkgsForEachSystem (pkgs: {
+      default = pkgs.mkShellNoCC {
+        packages = with pkgs; [openjdk11 maven];
+      };
+    });
+  };
+}