Add development flake.

flake.nix

@@ -0,0 +1,33 @@
+{
+  description = "Flake for building scenic driver local.";
+
+  inputs = {
+    nixpkgs = { url = "github:NixOS/nixpkgs/nixos-23.05"; };
+    flake-utils = { url = "github:numtide/flake-utils"; };
+  };
+  outputs = { self, nixpkgs, flake-utils }:
+    flake-utils.lib.eachDefaultSystem (system:
+    let
+      inherit (pkgs.lib) optional optionals;
+      pkgs = import nixpkgs { inherit system; };
+
+      elixir = pkgs.beam.packages.erlang.elixir;
+    in
+    with pkgs;
+    {
+      devShell = pkgs.mkShell {
+        buildInputs = [
+          elixir
+          elixir_ls
+          glibcLocales
+          glew glfw pkg-config
+          xorg.libX11 xorg.libXau xorg.libXdmcp
+        ] ++ optional stdenv.isLinux inotify-tools
+          ++ optional stdenv.isDarwin terminal-notifier
+          ++ optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+            CoreFoundation
+            CoreServices
+          ]);
+      };
+  });
+}