Monorepo and no tailwind.config.js

[grinkus-adapt]

Describe the bug
Similar to #70, I have a project using tailwind v4 and there's not a single tailwind.config.js file in the monorepo. In my case it's created and managed as turborepo, but that's just a minor detail. The completion doesn't work until I manually create an empty tailwind.config.js in the root directory of the project.

Expected behavior
Completion should work out of the box, without me creating placeholder files (in this case, tailwind.config.js in the root dir).

Environment:

• Ubuntu 24.04.2 LTS
• NVIM v0.11.3
• Nvim-treesitter commit 42fc28ba918343ebfd5565147a42a26580579482
• tailwind-language-server 0.14.25

[pgzm29]

I'm having the exact same behavior with a Phoenix app v1.8.0. The default css file is under ./assets/css/app.css, and I have also added a custom root_dir function that looks like this:

local files = {
  -- Default list of files
  "tailwind.config.{js,cjs,mjs,ts}",
  "assets/tailwind.config.{js,cjs,mjs,ts}",
  "theme/static_src/tailwind.config.{js,cjs,mjs,ts}",
  "app/assets/stylesheets/application.tailwind.css",
  "app/assets/tailwind/application.css",
  -- Custom list of files
  "assets/css/app.css",
}

return {
  "luckasRanarison/tailwind-tools.nvim",
  build = ":UpdateRemotePlugins",
  dependencies = {
    "nvim-treesitter/nvim-treesitter",
    "neovim/nvim-lspconfig",
  },
  opts = {
    server = {
      root_dir = function(fname)
        local lspconfig = require("lspconfig")
        local root_files = lspconfig.util.insert_package_json(files, "tailwindcss", fname)
        return lspconfig.util.root_pattern(root_files)(fname)
      end,
    },
  },
}

This approach was taken from the source code and extended to include assets/css/app.css but it's not working.

Only when I create an empty tailwind.config.js file in the root of the project, it works correctly.

I'd really appreciate some guidance on this as I really like the plugin.