Add a simple default.nix

Author: bsima

.gitignore

@@ -4,3 +4,4 @@
 /cfg.h
 /TAGS
 /archive/
+/result

default.nix

@@ -0,0 +1,14 @@
+{ nixpkgs ? import <nixpkgs> {} }:
+
+with nixpkgs;
+
+stdenv.mkDerivation {
+  name = "cmdtree";
+  src = ./.;
+  buildPhase = "make";
+  installPhase = ''
+    mkdir -p $out/bin
+    cp ./cmdtree $out/bin
+  '';
+  buildInputs = [ pkgs.xorg.libX11 pkgs.xorg.libXft ];
+}