diff --git a/flake.nix b/flake.nix
index dbf0aee7..1c297434 100644
--- a/flake.nix
+++ b/flake.nix
@@ -281,7 +281,7 @@
           src = ./.;
           hooks = {
             alejandra.enable = true; # formatter
-            deadnix.enable = true; # detect unused variable bindings in `*.nix`
+            # deadnix.enable = true; # detect unused variable bindings in `*.nix`
             statix.enable = true; # lints and suggestions for Nix code(auto suggestions)
           };
         };
@@ -446,6 +446,8 @@
   };
 
   # the nixConfig here only affects the flake itself, not the system configuration!
+  # for more information, see:
+  #     https://nixos-and-flakes.thiscute.world/nixos-with-flakes/add-custom-cache-servers
   nixConfig = {
     # substituers will be appended to the default substituters when fetching packages
     extra-substituters = [
diff --git a/home/base/server/core.nix b/home/base/server/core.nix
index ba506fb4..4552d5ca 100644
--- a/home/base/server/core.nix
+++ b/home/base/server/core.nix
@@ -57,18 +57,11 @@
   ];
 
   programs = {
-    # modern vim
-    neovim = {
-      enable = true;
-      defaultEditor = true;
-      vimAlias = true;
-    };
-
     # A modern replacement for ‘ls’
     # useful in bash/zsh prompt, not in nushell.
     eza = {
       enable = true;
-      enableAliases = true;
+      enableAliases = false;  # do not enable aliases in nushell!
       git = true;
       icons = true;
     };