Treesitter libraries cannot be loaded by Emacs (current UCRT64 packages)

[MagielBruntink]

Description / Steps to reproduce the issue

Installed versions:

• mingw-w64-ucrt-x86_64-libtree-sitter 1~0.26.2-2
• mingw-w64-ucrt-x86_64-emacs 30.2-7

Error message when installing & loading a treesitter libraries (eg. for json):

Warning (treesit): Error encountered when installing language grammar: (treesit-error tree-sitter library not found or failed to load)

The library is installed correctly in .emacs.d/tree-sitter/libtree-sitter-json.dll.

Expected behavior

Loading and using the treesitter library for ts-*-modes.

Actual behavior

Error message, ts-modes do not work.

Verification

• I have verified that my MSYS2 is up-to-date before submitting the report (see https://www.msys2.org/docs/updating/)

Windows Version

MINGW64_NT-10.0-26200

MINGW environments affected

• MINGW64
• MINGW32
• UCRT64
• CLANG64
• CLANGARM64

Are you willing to submit a PR?

Sure, but no idea where to fix.

[ognevny]

this will be fixed only if emacs devs finally create a new release with tree-sitter 0.26 compatibility...

[dacodas]

Are there possible workaround for this?

1. If I install an older version of the tree-sitter library (say 0.25) and build Emacs from source, ought that work?
2. Would it be possible to just downgrade the tree-sitter library to 0.25?

I would appreciate any insight :)

[dacodas]

I see that there is a patch here that attempts to address this. Maybe I'll read a bit more to try to understand better; I might attempt making a new package linked against the old version, but it would be helpful to know if that's a promising direction or not

[dacodas]

Actually, for my personal use case (which was having issues with completion via C-M-i using Eglot returning the output below), I was able to work around this by just binding completion-at-point to TAB

Error running timer: (treesit-error "tree-sitter library not found or failed to load")

[ognevny]

I see that there is a patch here that attempts to address this

the problem is that this patch actually depends on some changes not presented in latest release, so it's a kind of a workaround

[MagielBruntink]

Are there possible workaround for this?

1. If I install an older version of the tree-sitter library (say 0.25) and build Emacs from source, ought that work?
2. Would it be possible to just downgrade the tree-sitter library to 0.25?

I would appreciate any insight :)

I have downgraded the tree-sitter library to the last 0.25 and that works fine.

[ognevny]

well, I'm trying to add separate package for tree-sitter 0.25 in #27503, but emacs rebuild unexpectedly failed for GCC environments

[oscarfv]

Reading this clarifies the issue: jdtsmith/emacs-mac#121

Apart from cherry-picking the commit that adapts Emacs to 0.26, this commentary may be relevant to users:

One thing that changes is that grammars need to be rebuilt for the new tree-sitter library.
At least that my assumption.