Parser dependencies don't start automatically

[flexagoon]

On some parsers (I currently found astro and php to be affected) highlighting doesn't work when you open a file. It sometimes starts working after restarting treesitter or switching a file, but sometimes doesn't.

Easiest way to reproduce:

<?php

echo "Hello World!";

When you open this file with treesitter highlighting enabled, it looks like this:

However, after running :lua vim.treesitter.stop(); vim.treesitter.start():

[mrcjkb]

hey 👋

thanks for reporting. Are you using scm parsers or 0.0.x versioned parsers? If the latter, which versions?

This is a known issue with scm parsers that depend on other parsers or queries, as you cannot ensure compatibility.
The recommendation is to use the versioned parsers.

[flexagoon]

@mrcjkb I'm using versioned parsers, the php parser version is 0.0.33.

A thing I'm also experiencing sometimes (but not the other times?..) is that I need to wait a while after opening the file, and only restart treesitter after that. So if I open the file and immediately restart it, nothing happens, but if I wait 20 seconds and restart it, the highlighting gets fixed.

[flexagoon]

@mrcjkb seems like this is caused by nvim-neorocks/rocks-treesitter.nvim#39, because manually installing the tree-sitter-php_only parser fixes the issue.

It seems like parsers which are installed implicitly as dependencies just don't get started automatically sometimes.

[flexagoon]

I'll close that issue and copy it here:

nvim-neorocks/rocks-treesitter.nvim#20 was supposed to be fixed by adding tree-sitter-ecma to the parser's dependencies, however, if you install tree-sitter-typescript without manually installing tree-sitter-ecma, the issue described in nvim-neorocks/rocks-treesitter.nvim#20 still occurs.

[mrcjkb]

Ah, I see where the issue is. Those dependencies are for queries, not parsers.
rocks.nvim automatically adds parsers to the runtimepath, but not queries.

I'm quite busy right now, but I'll see if I can come up with a fix on Friday.

Moving this issue to rocks.nvim.

[mrcjkb]

Just tried it out. It works fine on my end with tree-sitter-typescript, but not with tree-sitter-php. For tree-sitter-php, I have to manually install tree-sitter-php_only.

Update: The issue is that there's a delay until the package gets added to the runtimepath.
If I open up nvim and wait a bit, it works for php, too.