shell fixes

home-manager/shell.nix

@@ -8,6 +8,7 @@
       x = "startx";
       rm = "rm -i";
       cal = "cal -m";
+      ls = "ls --color";
     };
     envExtra = ''
       export PS1=$'%B%n%b@%B%m%b: %~\nλ '

home-manager/terminal.nix

@@ -2,6 +2,8 @@
 {
   programs.wezterm = {
     enable = true;
+    enableBashIntegration = false;
+    enableZshIntegration = false;
     extraConfig = builtins.readFile ./wezterm.lua;
   };
 }