return {
  "mrcjkb/haskell-tools.nvim",
  ft = { "haskell", "lhaskell", "cabal" },
  opts = {

    hls = {
      settings = {
        haskell = {
          formattingProvider = "fourmolu",
          -- wir nutzen das interne Plugin, kein externes Binary nötig:
          plugin = { fourmolu = { config = { external = false } } },

          -- .cabal-Formatting komplett deaktivieren (sonst verlangt HLS cabal-fmt)
          cabalFormattingProvider = "none",
        },
      },
    },
    -- optional: Safety im on_attach
    on_attach = function(client, bufnr)
      if vim.bo[bufnr].filetype == "cabal" then
        client.server_capabilities.documentFormattingProvider = false
      end
    end,
  },
}