added nix flake

flake.nix

@@ -0,0 +1,34 @@
+{
+  description = "swaywm development environment";
+
+  inputs = {
+    nixpkgs.url = "nixpkgs/nixpkgs-unstable";
+    flake-utils = { url = "github:numtide/flake-utils"; };
+  };
+
+  outputs = {self, nixpkgs, flake-utils }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = import nixpkgs { inherit system; };
+
+      in {
+        devShell = pkgs.mkShell {
+          depsBuildBuild = with pkgs; [
+            pkg-config
+          ];
+ 
+          nativeBuildInputs = with pkgs; [
+            cmake meson ninja pkg-config wayland-scanner scdoc
+          ];
+
+          buildInputs = with pkgs; [
+            wayland libxkbcommon pcre json_c libevdev pango cairo libinput libcap pam gdk-pixbuf librsvg
+            wayland-protocols libdrm wlroots dbus xwayland
+            # wlroots
+            libGL pixman xorg.xcbutilwm xorg.libX11 libcap xorg.xcbutilimage xorg.xcbutilerrors mesa
+            libpng ffmpeg xorg.xcbutilrenderutil seatd
+          ];
+        };
+      }
+    );
+}