#+title: Neovim Language Server Configuration
* Keybindings
Set keys for LSP auto-completion.
#+begin_src lua :tangle yes
  vim.keymap.set('n', '<space>e', vim.diagnostic.open_float, opts)
  vim.keymap.set('n', '[d', vim.diagnostic.goto_prev, opts)
  vim.keymap.set('n', ']d', vim.diagnostic.goto_next, opts)
  vim.keymap.set('n', '<space>q', vim.diagnostic.setloclist, opts)

  -- Use an on_attach function to only map the following keys
  -- after the language server attaches to the current buffer
  local on_attach = function(client, bufnr)
    -- Enable completion triggered by <c-x><c-o>
    vim.api.nvim_buf_set_option(bufnr, 'omnifunc', 'v:lua.vim.lsp.omnifunc')

    local bufopts = { noremap=true, silent=true, buffer=bufnr }
    vim.keymap.set('n', 'gD', vim.lsp.buf.declaration, bufopts)
    vim.keymap.set('n', 'gd', vim.lsp.buf.definition, bufopts)
    vim.keymap.set('n', 'K', vim.lsp.buf.hover, bufopts)
    vim.keymap.set('n', 'gi', vim.lsp.buf.implementation, bufopts)
    vim.keymap.set('n', '<C-k>', vim.lsp.buf.signature_help, bufopts)
    vim.keymap.set('n', '<space>wa', vim.lsp.buf.add_workspace_folder, bufopts)
    vim.keymap.set('n', '<space>wr', vim.lsp.buf.remove_workspace_folder, bufopts)
    vim.keymap.set('n', '<space>wl', function()
      print(vim.inspect(vim.lsp.buf.list_workspace_folders()))
    end, bufopts)
    vim.keymap.set('n', '<space>D', vim.lsp.buf.type_definition, bufopts)
    vim.keymap.set('n', '<space>rn', vim.lsp.buf.rename, bufopts)
    vim.keymap.set('n', '<space>ca', vim.lsp.buf.code_action, bufopts)
    vim.keymap.set('n', 'gr', vim.lsp.buf.references, bufopts)
    vim.keymap.set('n', '<space>f', function() vim.lsp.buf.format { async = true } end, bufopts)
  end
#+end_src

* Languages
Turn on LSP for various languages.
#+begin_src lua :tangle yes
  require('lspconfig')['awk_ls'].setup{
      on_attach = on_attach,
      flags = lsp_flags,
  }

  require('lspconfig')['bashls'].setup{
      on_attach = on_attach,
      flags = lsp_flags,
  }

  require('lspconfig')['fortls'].setup{
      on_attach = on_attach,
      flags = lsp_flags,
  }

  require('lspconfig')['hls'].setup{
      on_attach = on_attach,
      flags = lsp_flags
  }

  require('lspconfig')['pyright'].setup{
      on_attach = on_attach,
      flags = lsp_flags,
  }

  require('lspconfig')['tsserver'].setup{
      on_attach = on_attach,
      flags = lsp_flags,
  }

  require('lspconfig')['rust_analyzer'].setup{
      on_attach = on_attach,
      flags = lsp_flags,
      settings = {
        ["rust-analyzer"] = {}
      }
  }

  require('lspconfig')['gopls'].setup{
      on_attach = on_attach,
      flags = lsp_flags
  }

  require('lspconfig')['clangd'].setup{
      on_attach = on_attach,
      flags = lsp_flags
  }

  require('lspconfig')['texlab'].setup{
      on_attach = on_attach,
      flags = lsp_flags
  }

  require('lspconfig')['perlpls'].setup{}
#+end_src