Simplify nixpkgs eval

shells.nix

@@ -1,20 +1,10 @@
 {
   pkgs,
-  nixvimunstable,
   colmena,
   ...
 }:
 let
   inherit (pkgs.stdenv.hostPlatform) system;
-  vim = (
-    nixvimunstable.legacyPackages.${system}.makeNixvim (
-      import ./home/baseline/vim/config.nix {
-        inherit pkgs;
-        inherit (pkgs) lib;
-        config.nixpkgs.config.allowUnfree = false; # I have tried to allow it, but I don't seem able to do so
-      }
-    )
-  );
 in
 {
   default = pkgs.mkShell {
@@ -28,9 +18,7 @@ in
       gzip
       inject
       inject-darwin
-      nushell
       vim
-      xonsh
       zellij
     ];
   };