rust: nuked my custom formatter

config/keymaps.nix

@@ -1,4 +1,5 @@
-{ ... }: {
+{ ... }:
+{
   keymaps = [
     {
       # Focus file tree
@@ -10,6 +11,16 @@
       key = "<leader>e";
       action = "<cmd>CHADopen<cr>";
     }
+    {
+      # format current document
+      mode = "n";
+      key = "<leader>bf";
+      action = "<cmd>lua require('conform').format()<cr>";
+      options = {
+        silent = true;
+        desc = "Format Buffer";
+      };
+    }
   ];
 
 }

config/plugins/lang/rust.nix

@@ -11,13 +11,7 @@
 
     conform-nvim.settings = {
       formatters_by_ft = {
-        rust = [ "cargo" ];
+        rust = [ "rustfmt" ];
-      };
-
-      formatters = {
-        cargo = {
-          command = "cargo-fmt";
-        };
       };
     };