Migration from Packer: How to replace this use case of "after"?

[xigoi]

I had a config like this in Packer:

use {
  "https://github.com/neovim/nvim-lspconfig",
  as = "lspconfig",
  config = function()
    lsp_setup = function(server, config, before)
      -- ...
    end
  end,
},
use {
  "https://github.com/jose-elias-alvarez/null-ls.nvim",
  as = "null-ls",
  after = "lspconfig",
  config = function()
    local null_ls = require "null-ls"
    lsp_setup(null_ls, {
      -- ...
    })
  end,
},

When I migrated this config to lazy.nvim, which doesn't support after, it created a race condition where if null-ls is loaded before lspconfig, the lsp_setup function doesn't exist yet. How do I solve this problem?

As suggested by the docs, I tried using dependencies, but it didn't help.

[folke]

just setup null-ls inside your config for lspconfig. no need to pecify dependencies here.

[masaeedu]

@folke This doesn't really make sense if you have shared setup that needs to go before multiple dependents.

[masaeedu]

More generally I think it would be useful to specify in more detail what sort of magic lazy.nvim is doing in terms of instrumenting lua requires, and (tangentially related) what kind of guarantees we have about the evaluation order of stuff in config. AFAICS there is little to no documentation on this subject.

[Jomik]

Do you have an example? I am unsure I see the issue.
If you specify your dependency in dependencies then that will always be loaded before the dependent is loaded.
The only thing you need to keep in mind is that your config is lazy, so you should "always" do your requires lazily, in the config function, as an example.
I guess this could be an example https://github.com/Jomik/dotfiles/blob/718c8f82963dfc0f0a1c4c25725b75223024a68c/.config/nvim/lua/plugins/folding.lua#L54-L56
I cannot just use require("ufo").openAllFolds, I need to wrap it in a function.

Perhaps you have an example? And perhaps it is better if you open your own discussion, if this answer does not fit you 😄