Root directory not found, Neovim and Lspconfig

[pauladam94]

Here is my config for the LSP in neovim in init.lua.

  {
    "neovim/nvim-lspconfig",
    dependencies = {
      "kevinhwang91/nvim-ufo",
      { "j-hui/fidget.nvim", opts = {} },
      { "folke/neodev.nvim", opts = {} },
    },
    -- This was an unsuccessful try
    -- opts = {
    --  servers = {
    --    tinymist = {
    --      settings = {
    --        rootPath = "~/PaulJR/",
    --      },
    --    },
    --  },
    --},
      local capabilities = vim.lsp.protocol.make_client_capabilities()
      capabilities = vim.tbl_deep_extend("force", capabilities, require("cmp_nvim_lsp").default_capabilities())

      local lsp_capabilities = require("cmp_nvim_lsp").default_capabilities()

      -- TINYMIST
      require("lspconfig")["tinymist"].setup {
        capabilities = lsp_capabilities,
        settings = {
          tinymist = {
          -- another unsucessfull try
           --  rootPath = "~/PaulJR/",
            settings = {
              rootPath = "~/PaulJR/",
            },
          },
        },
      }
}

In the tinymist docs, for the root path it is indicated to put - for getting the parent directory. Is it the string "-" right ? Just to be sure because I also have tried that but it didn't work.

Here is the result of LspInfo :

 Language client log: /home/pauladam/.local/state/nvim/lsp.log
 Detected filetype:   typst
 
 0 client(s) attached to this buffer: 
 
 Other clients that match the filetype: typst
 
 Config: tinymist
 	filetypes:         typst
 	root directory:    Not found. -- here is the issue
 	cmd:               /run/current-system/sw/bin/tinymist
 	cmd is executable: true
 	autostart:         true
 	custom handlers:   
 
 Configured servers list: tsserver, clangd, coq_lsp, lua_ls, rust_analyzer, tinymist

• I am using lazy for getting package in neovim
• Just to explain why I don't use Mason, I am using NixOS and mason does not work it (as far as know).
• I have installed through the nix package manager which is what i have done for other lsp.
• I have everytime restarted neovim
• I have other lsp setup that way and they work (cland, rust-analyzer).
• tynymist is well installed on my computer

➜  ~ tinymist --version
tinymist 
Build Timestamp:     1980-01-01T00:00:00.000000000Z
Build Git Describe:  VERGEN_IDEMPOTENT_OUTPUT
Commit SHA:          VERGEN_IDEMPOTENT_OUTPUT
Commit Date:         None
Commit Branch:       None
Cargo Target Triple: x86_64-unknown-linux-gnu
Typst Version:       0.11.1
➜  ~ tinymist -V
tinymist 0.11.9

Maybe I am doing something obviously wrong, that's why I post this issue. Thank in advance.