Pickers from extensions aren't listed in :Telescope

[9999years]

Description

In my configuration, I set \t to open :Telescope to select any picker I want, and then I have other key bindings for specific pickers, for example I have \f set to find_files.

I recently added some extensions, but unfortunately they don't show up in :Telescope, which only lists builtin pickers.

Is there some way to browse extensions and their associated pickers from within Telescope? If not, could we add one? This could be a consideration for #1228 as well -- if there are no builtins, we certainly want a nice way to browse extensions.

-- Configuration, using packer.
use {
  "nvim-telescope/telescope.nvim",
  config = function()
    -- Set some key bindings; \t for all telescope pickers, others for specific pickers.
    vim.api.nvim_set_keymap("n", "<leader>t", ":<C-u>Telescope<CR>", { noremap = true })
    vim.api.nvim_set_keymap("n", "<leader>f", ":<C-u>Telescope find_files<CR>", { noremap = true })
    -- ...
    require("telescope").setup{}
    -- Load some extensions
    require('telescope').load_extension("fzy_native")
    require("telescope").load_extension("ui-select") -- telescope-ui-select.nvim
    require("telescope").load_extension("gh")  -- telescope-github.nvim
    require("telescope").load_extension("file_browser") -- telescope-file-browser.nvim
    require("telescope").load_extension("packer") -- telescope-packer.nvim
  end,
  requires = {
    "nvim-lua/popup.nvim",
    "nvim-lua/plenary.nvim",
    "nvim-telescope/telescope-fzy-native.nvim",
    "nvim-telescope/telescope-ui-select.nvim",
    "nvim-telescope/telescope-github.nvim",
    "nvim-telescope/telescope-file-browser.nvim",
    "nvim-telescope/telescope-packer.nvim",
  },
}

Neovim version

$ nvim --version
NVIM v0.7.0
Build type: Release
LuaJIT 2.1.0-beta3
Compiled by brew@HMBRW-A-001-M1-004.local

Features: +acl +iconv +tui

$ uname -a
Darwin helvetica 21.4.0 Darwin Kernel Version 21.4.0: Fri Mar 18 00:47:26 PDT 2022; root:xnu-8020.101.4~15/RELEASE_ARM64_T8101 arm64

Operating system and version

macOS Monterey 12.3.1

checkhealth telescope

telescope: require("telescope.health").check()
========================================================================
## Checking for required plugins
  - OK: plenary installed.
  - OK: nvim-treesitter installed.

## Checking external dependencies
  - OK: rg: found ripgrep 13.0.0
  - OK: fd: found fd 8.3.2

## ===== Installed extensions =====

## Telescope Extension: `file_browser`
  - INFO: No healthcheck provided

## Telescope Extension: `fzy_native`
  - INFO: No healthcheck provided

## Telescope Extension: `gh`
  - INFO: No healthcheck provided

## Telescope Extension: `packer`
  - INFO: No healthcheck provided

## Telescope Extension: `ui-select`
  - INFO: No healthcheck provided

Steps to reproduce

1. nvim -nu minimal.lua: load nvim with Telescope installed and some extensions, e.g. nvim-telescope/telescope-github.nvim.
2. :Telescope and search for gh; nothing shows up.
3. :Telescope gh issues can load the GitHub extension, but :Telescope/:Telescope pickers doesn't list it, and :Telescope gh give an error instead of listing pickers from the GitHub extension.

Expected behavior

Pickers from extensions are listed in :Telescope, :Telescope pickers, or similar.

Actual behavior

Pickers from extensions are not listed and must be memorized/bound to keys directly.

Minimal config

vim.cmd [[set runtimepath=$VIMRUNTIME]]
vim.cmd [[set packpath=/tmp/nvim/site]]
local package_root = '/tmp/nvim/site/pack'
local install_path = package_root .. '/packer/start/packer.nvim'
local function load_plugins()
  require('packer').startup {
    {
      'wbthomason/packer.nvim',
      {
        'nvim-telescope/telescope.nvim',
        requires = {
          'nvim-lua/plenary.nvim',
          'nvim-telescope/telescope-github.nvim',
        },
      },
    },
    config = {
      package_root = package_root,
      compile_path = install_path .. '/plugin/packer_compiled.lua',
      display = { non_interactive = true },
    },
  }
end
_G.load_config = function()
  require('telescope').setup{}
  require('telescope').load_extension('gh')
end
if vim.fn.isdirectory(install_path) == 0 then
  print("Installing Telescope and dependencies.")
  vim.fn.system { 'git', 'clone', '--depth=1', 'https://github.com/wbthomason/packer.nvim', install_path }
end
load_plugins()
require('packer').sync()
vim.cmd [[autocmd User PackerComplete ++once echo "Ready!" | lua load_config()]]

[Conni2461]

So they should show up when you autocomplete :Telescope g<tab> should give you the extension (namespace) gh and <tab> should then show the pickers.

Furthermore you can do Telescope builtin include_extensions=true to also get them with :Telescope which is just a shorthand for :Telescope builtin (but our command parser don't supports opts as second argument (yet)). see :help telescope.builtin.builtin()

[9999years]

Thanks! That worked!

I've replaced my binding:

vim.api.nvim_set_keymap("n", "<leader>t", ":<C-u>Telescope<CR>", { noremap = true })

with

vim.api.nvim_set_keymap("n", "<leader>t", ":<C-u>Telescope builtin include_extensions=true<CR>", { noremap = true })

[gegoune]

@9999years That also works and looks bit cleaner imo:

vim.keymap.set('n', '<leader>t', function()
  require('telescope.builtin').builtin { include_extensions = true }
end)