How can I use different sources for same filetype depending on project settings?

[AlejandroSuero]

For example I am now trying out selene for lua files, but working on some changes on plenary.nvim, which uses luacheck, it won't recognize globals like vim or assert.

Note

This question could be use for projects using biome instead of eslint/prettier on a js/ts type of project. Or any other conflict between different format and diagnostic tools.

Now my config has something like this:

-- none-ls.lua config file
-- ...
sources = {
  -- ...
  diagnostics.selene,
  require("none-ls-luacheck.diagnostics.luacheck"),
  -- ...
}

But I want to know if is possible to do something like this:

-- none-ls.lua config file
-- ...
sources = {
  -- ...
  diagnostics.selene.with({
    condition = function()
      -- if root_dir contains "selene.toml" return true
      -- return false
    end,
  })
  require("none-ls-luacheck.diagnostics.luacheck").with({
    condition = function()
      -- if root_dir contains ".luacheck" return true
      -- return false
    end,
  }),
  -- ...
}

So it will choose only selene when selene.toml is in the root_dir and only luacheck when .luacheck is in the root_dir.

---

Working on plenary with selene and luacheck on the config:

Working on plenary with luacheck only on the config:

[AlejandroSuero]

I was checking out BUILTIN_CONFIG when I arrived to a solution that seems to be working out.

sources = {
-- ...
  diagnostics.selene.with({
    condition = function(utils)
      return utils.root_has_file { "selene.toml" }
    end,
  }),
  require("none-ls-luacheck.diagnostics.luacheck").with({
    condition = function(utils)
      return utils.root_has_file { ".luacheck" }
    end,
  }),
-- ...
}

I will leave this open in case it ends up not working fine or someone has a better solution.