Add flake.nix for building with Nix.

Author: MadelineBaggins

.gitignore

@@ -1 +1,2 @@
 /target
+/result

flake.lock

@@ -0,0 +1,43 @@
+{
+  description = "The most basic dynamic function row daemon possible";
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-23.11";
+  };
+  outputs = { self, nixpkgs }:
+    let
+      pkgs = import nixpkgs { system = "aarch64-linux"; };
+    in
+    rec {
+      packages.aarch64-linux.default = pkgs.rustPlatform.buildRustPackage {
+        name = "tiny-dfr";
+        version = "0.2.0";
+        src = ./.;
+        cargoLock = {
+          lockFile = ./Cargo.lock;
+        };
+        nativeBuildInputs = [
+          pkgs.pkg-config
+        ];
+        buildInputs = [
+          pkgs.cairo
+          pkgs.libinput
+          pkgs.freetype
+          pkgs.fontconfig
+          pkgs.glib
+          pkgs.pango
+          pkgs.gdk-pixbuf
+          pkgs.libxml2
+        ];
+      };
+      devShells.aarch64-linux.default = pkgs.mkShell {
+        inputsFrom = [
+          packages.aarch64-linux.default
+        ];
+        packages = [
+	  pkgs.rustfmt
+          pkgs.rust-analyzer
+        ];
+        RUST_SRC_PATH = "${pkgs.rustPlatform.rustLibSrc}";
+      };
+    };
+}