Trying to unpin the main file with tinymist.pinMain fails in Neovim

[JonPichel]

Describe the bug

Sending the tinymist.pinMain command with a nil argument from Neovim as specified in the documentation doesn't work.

Package/Software version:

Neovim version:

NVIM v0.11.0-dev-1437+g259573db83
Build type: Release
LuaJIT 2.1.1734355927

tinymist version: v0.12.14. Get it by tinymist --version in terminal.

tinymist
Build Timestamp:     2024-12-25T13:14:21.205058339Z
Build Git Describe:  v0.12.14
Commit SHA:          db2080715352f8cc8eba699b42ae3fa828892c07
Commit Date:         None
Commit Branch:       None
Cargo Target Triple: x86_64-unknown-linux-gnu
Typst Version:       0.12.0
Typst Source:        git+https://github.com/Myriad-Dreamin/typst.git?tag=tinymist-v0.12.0#58426a90a7ef721738a01be09793d33e55eb75a9

Logs:

Neovim messages:

tinymist: -32602: expect Option<PathBuf> at args[0]

Additional context

This is my configuration for tinymist in Neovim:

        tinymist = {
          on_attach = function(client, bufnr)
            -- Pin the main file.
            vim.keymap.set("n", "<leader>pp", function()
              client:exec_cmd({ command = 'tinymist.pinMain', arguments = { vim.api.nvim_buf_get_name(0) } })
            end, {
              buffer = bufnr,
              desc = "Typst: Pin main file"
            })
            -- Unpin the main file.
            vim.keymap.set("n", "<leader>pu", function()
              client:exec_cmd({ command = 'tinymist.pinMain', arguments = { nil } })
            end, {
              buffer = bufnr,
              desc = "Typst: Unpin main file"
            })
          end,
          settings = {
            exportPdf = "onSave",
            fontPaths = {
              "fonts",
            },
            formatterMode = "typstyle",
          },
        },
``

[SylvanFranklin]

The docs for neovim are out of date with a PR under way to fix them. What are you looking for by pinning the file? Is it to avoid exporting a blank PDF of a library file?