:TSInstall not install parsers to parser_install_dir

[fcying]

Describe the bug

I customized the parser_install_dir folder. When I start nvim for the first time, it automatically downloads the parsers listed in ensure_installed to the parser_install_dir directory. However, when I use TSinstall xxx, it downloads to the plugin directory instead.

config:

        "nvim-treesitter/nvim-treesitter",
        event = "VeryLazy",
        build = ":TSUpdate",
        config = function()
            local parser_install_dir = g.runtime_dir .. "/parsers"
            vim.opt.runtimepath:prepend(parser_install_dir)
            require("nvim-treesitter.configs").setup({
                parser_install_dir = parser_install_dir,
                ensure_installed = {
                    "vim", "vimdoc", "lua", "query",
                    "bash", "regex", "markdown", "markdown_inline",
                    "cpp", "comment"
                },
                sync_install = false,
                auto_install = false,
                ignore_install = {},
                matchup = { enable = true },
                ...
            })
        end

To Reproduce

1. remove all parsers
2. nvim --auto install ensure_installed list
3. TSinstall vue

Expected behavior

all parsers installed to the parser_install_dir

Output of :checkhealth nvim-treesitter

nvim-treesitter: require("nvim-treesitter.health").check()

Installation ~
- WARNING `tree-sitter` executable not found (parser generator, only needed for :TSInstallFromGrammar, not required for :TSInstall)
- OK `node` found v20.12.2 (only needed for :TSInstallFromGrammar)
- OK `git` executable found.
- OK `cc` executable found. Selected from { vim.NIL, "cc", "gcc", "clang", "cl", "zig" }
  Version: cc (Debian 12.2.0-14) 12.2.0
- OK Neovim was compiled with tree-sitter runtime ABI version 14 (required >=13). Parsers must be compatible with runtime ABI.

OS Info:
{
  machine = "x86_64",
  release = "5.15.146.1-microsoft-standard-WSL2",
  sysname = "Linux",
  version = "#1 SMP Thu Jan 11 04:09:03 UTC 2024"
} ~

Parser/Features         H L F I J
  - bash                ✓ ✓ ✓ . ✓
  - c                   ✓ ✓ ✓ ✓ ✓
  - comment             ✓ . . . .
  - cpp                 ✓ ✓ ✓ ✓ ✓
  - lua                 ✓ ✓ ✓ ✓ ✓
  - markdown            ✓ . ✓ ✓ ✓
  - markdown_inline     ✓ . . . ✓
  - python              ✓ ✓ ✓ ✓ ✓
  - query               ✓ ✓ ✓ ✓ ✓
  - regex               ✓ . . . .
  - typescript          ✓ ✓ ✓ ✓ ✓
  - vim                 ✓ ✓ ✓ . ✓
  - vimdoc              ✓ . . . ✓
  - vue                 ✓ . ✓ ✓ ✓

  Legend: H[ighlight], L[ocals], F[olds], I[ndents], In[j]ections
         +) multiple parsers found, only one will be used
         x) errors found in the query, try to run :TSUpdate {lang} ~

Output of nvim --version

0.10

Additional context

No response

[clason]

Sorry, we don't support lazy-loading. If you can reproduce this with a minimal config that only uses nvim-treesitter (that I can test with nvim --clean -u test.lua), I will take a look.

[fcying]

My mistake. I set up parser_install_dir once when installing nvim-treesitter, and called require("nvim-treesitter.configs").setup() again when installing nvim-treesitter-textobjects(without configuring parser_install_dir). As a result, parser_install_dir became nil. Combining the setups for these two plugins should fix it.