misc: add temporary nix file

shell.nix

@@ -0,0 +1,19 @@
+{ pkgs ? import <nixpkgs> { } }:
+
+with pkgs;
+
+mkShell rec {
+  nativeBuildInputs = [
+    pkg-config
+    emacs
+    rust-analyzer
+    openssl
+    ripgrep
+  ];
+  buildInputs = [
+    udev alsa-lib vulkan-loader
+    xorg.libX11 xorg.libXcursor xorg.libXi xorg.libXrandr # To use the x11 feature
+    libxkbcommon wayland # To use the wayland feature
+  ];
+  LD_LIBRARY_PATH = lib.makeLibraryPath buildInputs;
+}