bug: lazy.sync { plugins = ... }: attempt to index field '_' (a nil value)

[LostNeophyte]

Did you check docs and existing issues?

• I have read all the lazy docs
• I have searched the existing issues of lazy
• I have searched the exsiting issues of the plugin I have a problem with

Neovim version (nvim -v)

NVIM v0.9.0-dev+519-g2d8bbe468

Operating system/version

Fedora 36

Describe the bug

In readme it says that
require("lazy").sync(opts?) and
require("lazy").install(opts?) and
require("lazy").update(opts?) and
require("lazy").clean(opts?)

take opts as an argument and that opts can have a plugins key,
which is "a list of plugin names to run the operation on",
but if I pass { plugins = {"lazy.nvim"} } to any of these functions,
it results in the error below or attempt to index field '_' (a nil value) if I add vim.schedule to lazy/core/util.lua/notify()

Error executing luv callback:                                                                                                                                                                                                                   
vim/_editor.lua:0: E5560: nvim_err_writeln must not be called in a lua loop callback                                                                                                                                                            
stack traceback:                                                                                                                                                                                                                                
        [C]: in function 'nvim_err_writeln'                                                                                                                                                                                                     
        vim/_editor.lua: in function 'notify'                                                                                                                                                                                                   
        .../lazy.nvim/lua/lazy/core/util.lua:207: in function 'notify'                                                                                                                                                   
        .../lazy.nvim/lua/lazy/core/util.lua:221: in function 'error'                                                                                                                                                    
        .../lazy.nvim/lua/lazy/manage/runner.lua:50: in function '_resume'                                                                                                                                                   
        .../lazy.nvim/lua/lazy/manage/runner.lua:63: in function 'resume'                                                                                                                                                    
        .../lazy.nvim/lua/lazy/manage/runner.lua:87: in function <.../lazy.nvim/lua/lazy/manage/runner.lua:86>

Steps To Reproduce

1. diff --git a/lua/lazy/core/util.lua b/lua/lazy/core/util.lua
   index 1c0facb..c601b07 100644
   --- a/lua/lazy/core/util.lua
   +++ b/lua/lazy/core/util.lua
   @@ -204,6 +204,7 @@ function M.notify(msg, level)
          "\n"
        )
      end
   +  vim.schedule(function()
      vim.notify(msg, level, {
        on_open = function(win)
          vim.wo[win].conceallevel = 3
   @@ -214,6 +215,7 @@ function M.notify(msg, level)
        end,
        title = "lazy.nvim",
      })
   +  end)
    end
    
    ---@param msg string|string[]

2. nvim -u repro.lua

   :lua require("lazy").sync { plugins = {"lazy.nvim"} }
   -- Could not resume a task
   -- lazy.nvim/lua/lazy/manage/task/git.lua:86: attempt to index field '_' (a nil value)

   :lua require("lazy").clean { plugins = {"lazy.nvim"} }
   -- Could not resume a task
   -- lazy.nvim/lua/lazy/manage/task/fs.lua:9: attempt to index field '_' (a nil value)

   :lua require("lazy").install { plugins = {"lazy.nvim"} }
   -- Could not resume a task
   -- lazy.nvim/lua/lazy/manage/task/git.lua:52: attempt to index field '_' (a nil value)

   :lua require("lazy").update { plugins = {"lazy.nvim"} }
   -- Could not resume a task
   -- lazy.nvim/lua/lazy/manage/task/git.lua:86: attempt to index field '_' (a nil value)

Expected Behavior

require("lazy").sync { plugins = {"lazy.nvim"} }: update plugin if needed
require("lazy").clean { plugins = {"lazy.nvim"} }: do nothing, since plugin is use
require("lazy").install { plugins = {"lazy.nvim"} }: do nothing, since plugin is installed
require("lazy").update { plugins = {"lazy.nvim"} }: update if needed

Repro

-- DO NOT change the paths and don't remove the colorscheme
local root = vim.fn.fnamemodify("./.repro", ":p")

-- set stdpaths to use .repro
for _, name in ipairs({ "config", "data", "state", "cache" }) do
  vim.env[("XDG_%s_HOME"):format(name:upper())] = root .. "/" .. name
end

-- bootstrap lazy
local lazypath = root .. "/plugins/lazy.nvim"
if not vim.loop.fs_stat(lazypath) then
  vim.fn.system({
    "git",
    "clone",
    "--filter=blob:none",
    "--single-branch",
    "https://github.com/folke/lazy.nvim.git",
    lazypath,
  })
end
vim.opt.runtimepath:prepend(lazypath)

-- install plugins
local plugins = {
  "folke/tokyonight.nvim",
  -- add any other pugins here
}
require("lazy").setup(plugins, {
  root = root .. "/plugins",
})

vim.cmd.colorscheme("tokyonight")
-- add anything else here

[LostNeophyte]

All good now, thanks!