update: don't auto format haskell files

config/plugins/lsp/conform.nix

@@ -21,4 +21,14 @@
   extraPackages = with pkgs; [
     alejandra
   ];
+
+  extraConfigLua = "require('conform').setup({
+    format_on_save = function(bufnr)
+      -- Disable autoformat on certain filetypes
+      local ignore_filetypes = { 'haskell', }
+      if vim.tbl_contains(ignore_filetypes, vim.bo[bufnr].filetype) then
+        return
+      end
+    end,
+  })";
 }