First attempt at flake for home manager config

nix/home.nix

@@ -1,26 +1,13 @@
-{ config, pkgs, ... }:
+{ config, pkgs, lib, ... }:
 {
-  # Home Manager needs a bit of information about you and the
-  # paths it should manage.
   home.username = "ttm";
-  home.homeDirectory = builtins.getEnv "HOME";
-
-  nixpkgs.overlays = [
-    (import ./overlays/xonsh.nix)
-  ];
-
-  # This value determines the Home Manager release that your
-  # configuration is compatible with. This helps avoid breakage
-  # when a new Home Manager release introduces backwards
-  # incompatible changes.
-  #
-  # You can update Home Manager without changing this value. See
-  # the Home Manager release notes for a list of state version
-  # changes in each release.
+  home.homeDirectory = if lib.strings.hasInfix "darwin" pkgs.system
+                       then /Users/ttm else /home/ttm;
   home.stateVersion = "22.05";
 
   # Let Home Manager install and manage itself.
   programs.home-manager.enable = true;
+
   # Enable integration with generic Linux OSs
   targets.genericLinux.enable = pkgs.stdenv.isLinux;