Flake added

flake.nix

@@ -0,0 +1,58 @@
+{
+  description = "SFML flake for building and developing";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs?ref=nixos-unstable";
+  };
+
+  outputs = { self, nixpkgs }:
+    let
+      # Systems supported
+      allSystems = [
+        "x86_64-linux" # 64-bit Intel/AMD Linux
+        "aarch64-linux" # 64-bit ARM Linux
+        "x86_64-darwin" # 64-bit Intel macOS
+        "aarch64-darwin" # 64-bit ARM macOS
+      ];
+
+      # Helper to provide system-specific attributes
+      forAllSystems = f: nixpkgs.lib.genAttrs allSystems (system: f {
+        pkgs = import nixpkgs { inherit system; };
+      });
+    in
+    {
+      # Development section
+      devShells = forAllSystems ({ pkgs }: {
+        default = pkgs.mkShell {
+          # The Nix packages provided in the environment
+          packages = with pkgs; [
+            boost 
+            gcc
+            poco 
+          ];
+        };
+      });
+      # Build section
+      packages = forAllSystems ({ pkgs }: {
+        default =
+          let
+            binName = "SFML_Game";
+            cppDependencies = with pkgs; [
+              boost
+              gcc
+              poco
+            ];
+          in
+          pkgs.stdenv.mkDerivation {
+            name = "zero-to-nix-cpp";
+            src = self;
+            buildInputs = cppDependencies;
+            buildPhase = "c++ -std=c++17 -o ${binName} ${./main.cpp} -lPocoFoundation -lboost_system";
+            installPhase = ''
+              mkdir -p $out/bin
+              cp ${binName} $out/bin/
+            '';
+          };
+      });
+    };
+}