On 2021-08-08 23:29, Pierre Langlois wrote:

> 4. Finally, emacs support!
>
>   emacs-tree-sitter can be used for syntax highlighting, replacing
>   font-lock.  The tree-sitter runtime library is built as a Rust crate
>   and exposed to emacs using a module thanks to the rust-emacs crate.
>
>   Then emacs-tree-sitter-core provides just the core APIs as exposed by
>   the rust module, then emacs-tree-sitter integrates it with emacs'
>   syntax highlighting (and probably other things).
>
>   Finally, we bundle together the various language grammars into a
>   single emacs-tree-sitter-langs package so that they can get loaded
>   along with their respective major modes.  Note that there are grammars
>   left to support which I've not yet managed to package, but what we
>   have already is a good start I think :-). So far I've tested C++,
>   Rust, Python and JavaScript and JSON.
>
>   * gnu: Add rust-bindgen@0.56.
>   * gnu: Add rust-tree-sitter.
>   * gnu: rust-emacs-module: Update to 0.16.
>   * gnu: rust-emacs-macros: Update to 0.17.
>   * gnu: rust-emacs: Update to 0.17.
>   * gnu: Add emacs-tree-sitter-core.
>   * gnu: Add emacs-tree-sitter.
>   * gnu: Add emacs-tree-sitter-langs.

Hi Pierre!

Implemented a loading of tree-sitter grammars in Emacs using guix
native-search-paths and built-in treesit package.  I did it for emacs
package, but it will work only with Emacs 29 and greater (right now it's
emacs-next and similiar packages), until emacs package updated to
version 29 it won't take any effect on it except providing one more
environment variable in guix profile.

I tested it with emacs-next-pgtk, the patch is attached below, please
let me know what do you think!