local configs = require 'lspconfig/configs'
local util = require 'lspconfig/util'

configs.leanls = {
  default_config = {
    cmd = {"lean", "--server"};
    filetypes = {"lean"};
    root_dir = function(fname)
      return util.root_pattern("leanpkg.toml")(fname) or util.find_git_ancestor(fname) or util.path.dirname(fname)
    end;
    on_new_config = function(config, root)
      if not util.path.is_file(root .. "/leanpkg.toml") then return end
      if not config.cmd_cwd then
        config.cmd_cwd = root
      end
    end;
  };
  docs = {
    description = [[
https://github.com/leanprover/lean4

Lean installation instructions can be found
[here](https://leanprover-community.github.io/get_started.html#regular-install).

The Lean 4 language server is built-in with a Lean 4 install
(and can be manually run with, e.g., `lean --server`).
    ]];
    default_config = {
      root_dir = [[root_pattern("leanpkg.toml") or root_pattern(".git") or path.dirname]];
    };
  };
}
-- vim:et ts=2 sw=2