add flake.nix

flake.nix

@@ -0,0 +1,74 @@
+{
+  description = "Wire on your TTYs just feels better!";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.11";
+    systems.url = "github:nix-systems/default";
+
+    fenix.url = "github:nix-community/fenix";
+    fenix.inputs.nixpkgs.follows = "nixpkgs";
+  };
+
+  outputs = {
+    self,
+    nixpkgs,
+    ...
+  } @ inputs: let
+    systems = import inputs.systems;
+
+    mkPkgs = system: repo:
+      import repo {
+        inherit system;
+        allowUnfree = false;
+        allowBroken = false;
+        overlays = builtins.attrValues self.overlays or {};
+      };
+
+    forAllSystems = f:
+      nixpkgs.lib.genAttrs systems (system:
+        f rec {
+          inherit system;
+          inherit (pkgs) lib;
+          pkgs = mkPkgs system nixpkgs;
+        });
+  in {
+    overlays.default = self: super: {
+      libclang = super.llvmPackages_21.libclang;
+    };
+
+    devShells = forAllSystems (
+      {
+        system,
+        pkgs,
+        lib,
+        ...
+      }: {
+        default = pkgs.mkShell rec {
+          shell = "${pkgs.bash}/bin/bash";
+          strictDeps = true;
+
+          packages = with pkgs; [
+            cargo
+            rustc
+            inputs.fenix.packages.${system}.complete.rustfmt
+          ];
+
+          # packages we should be able to link against
+          buildInputs = with pkgs; [
+            # pipewire.dev
+            # libxkbcommon
+            # wayland
+          ];
+
+          # packages we run at build time / shellHook
+          nativeBuildInputs = with pkgs; [
+            pkg-config
+            rustPlatform.bindgenHook
+          ];
+
+          LD_LIBRARY_PATH = "$LD_LIBRARY_PATH:${builtins.toString (lib.makeLibraryPath buildInputs)}";
+        };
+      }
+    );
+  };
+}