feat: Initialized new flake

flake.nix

@@ -0,0 +1,48 @@
+{
+  description = "Zen Browser";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+  };
+
+  outputs = { self, nixpkgs }:
+    let
+      system = "x86_64-linux";
+      version = "1.0.0-a.26";
+      downloadUrl = "https://github.com/zen-browser/desktop/releases/download/${version}/zen.linux-specific.tar.bz2";
+      pkgs = import nixpkgs {
+        inherit system;
+      };
+
+      runtimeLibs = with pkgs; [
+        libGL stdenv.cc.cc fontconfig libxkbcommon zlib freetype
+        gtk3 libxml2 dbus xcb-util-cursor alsa-lib
+      ] ++ (with pkgs.xorg; [
+        libxcb libX11 libXcursor libXrandr libXi
+      ]);
+    in
+    {
+      packages.${system}.default = pkgs.stdenv.mkDerivation {
+        name = "zen-browser";
+
+	src = builtins.fetchTarball {
+	  url = downloadUrl;
+	  sha256 = "sha256:1z81dg3xgfpkyj501gflx8lw7d8124iqwm27zqfja2b47zf4ai2x";
+	};
+
+	phases = [ "installPhase" "fixupPhase" ];
+
+	nativeBuildInputs = [ pkgs.makeWrapper ] ;
+
+	installPhase = ''
+	  mkdir -p $out/bin && cp -r $src/* $out/bin
+	'';
+
+	fixupPhase = ''
+	  chmod 755 $out/bin/*
+          patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" $out/bin/zen
+          wrapProgram $out/bin/zen --set LD_LIBRARY_PATH "${pkgs.lib.makeLibraryPath runtimeLibs}"
+        '';
+      };
+    };
+}