switch to nixfmt from nixpkgs-fmt

pkgs/editor/clan-edit-codium.nix

@@ -3,7 +3,7 @@
   coreutils,
   nil,
   nixd,
-  nixpkgs-fmt,
+  nixfmt-rfc-style,
   direnv,
   vscode-extensions,
   vscode-with-extensions,
@@ -25,7 +25,7 @@ writeShellApplication {
     coreutils
     nil
     nixd
-    nixpkgs-fmt
+    nixfmt-rfc-style
     direnv
   ];
   text = ''

pkgs/editor/settings.json

@@ -2,11 +2,11 @@
   "security.workspace.trust.enabled": false,
   "nix.enableLanguageServer": true,
   "nix.serverPath": "nixd",
-  "nix.formatterPath": "nixpkgs-fmt",
+  "nix.formatterPath": "nixfmt",
   "nix.serverSettings": {
     "nixd": {
       "formatting": {
-        "command": "nixpkgs-fmt"
+        "command": "nixfmt"
       },
       "options": {
         "nixos": {