return {
  default_config = {
    cmd = { 'dhall-lsp-server' },
    filetypes = { 'dhall' },
    root_dir = function(fname)
      return vim.fs.dirname(vim.fs.find('.git', { path = fname, upward = true })[1])
    end,
    single_file_support = true,
  },
  docs = {
    description = [[
https://github.com/dhall-lang/dhall-haskell/tree/master/dhall-lsp-server

language server for dhall

`dhall-lsp-server` can be installed via cabal:
```sh
cabal install dhall-lsp-server
```
prebuilt binaries can be found [here](https://github.com/dhall-lang/dhall-haskell/releases).
]],
  },
}