local on_attach = function(_, bufnr)

  local bufmap = function(keys, func)
    vim.keymap.set('n', keys, func, { buffer = bufnr })
  end

  bufmap('<leader>r', vim.lsp.buf.rename)
  bufmap('<leader>a', vim.lsp.buf.code_action)

  bufmap('gd', vim.lsp.buf.definition)
  bufmap('gD', vim.lsp.buf.declaration)
  bufmap('gI', vim.lsp.buf.implementation)
  bufmap('<leader>D', vim.lsp.buf.type_definition)

  bufmap('gr', require('telescope.builtin').lsp_references)
  bufmap('<leader>s', require('telescope.builtin').lsp_document_symbols)
  bufmap('<leader>S', require('telescope.builtin').lsp_dynamic_workspace_symbols)

  bufmap('K', vim.lsp.buf.hover)

  vim.api.nvim_buf_create_user_command(bufnr, 'Format', function(_)
    vim.lsp.buf.format()
  end, {})
end

local capabilities = vim.lsp.protocol.make_client_capabilities()
capabilities = require('cmp_nvim_lsp').default_capabilities(capabilities)

require('neodev').setup()
require'lspconfig'.nil_ls.setup{ on_attach = on_attach, capabilities = capabilities }
require'lspconfig'.pyright.setup{ on_attach = on_attach, capabilities = capabilities }
require'lspconfig'.gopls.setup{ on_attach = on_attach, capabilities = capabilities }
require'lspconfig'.terraformls.setup{ on_attach = on_attach, capabilities = capabilities }