local signs = { Error = " ", Warn = " ", Hint = " ", Info = " " }
for type, icon in pairs(signs) do
  local hl = "DiagnosticSign" .. type
  vim.fn.sign_define(hl, { text = icon, texthl = hl, numhl = hl })
end

local lsp_installer = require("nvim-lsp-installer")
lsp_installer.on_server_ready(function(server)
    local opts = {
        capabilities = require("coq").lsp_ensure_capabilities(vim.lsp.protocol.make_client_capabilities()),
    }
    if server.name == "rust_analyzer" then
        require("rust-tools").setup{
            server = vim.tbl_deep_extend("force", server:get_default_options(), opts),
        }
        server:attach_buffers()
    else
        server:setup(opts)
    end
end)