Tree-sitter 0.25 is available in experimental and the packaging process
for parsers is becoming clearer.
I've been working upstream to unvendor as many parsers as possible:
https://github.com/Wilfred/difftastic/issues/891.
So I'm aiming to upload difftastic to experimental, removing support for
all the languages whose parsers are still vendored. Difftastic would
still be very useful with the existing collection of parsers (deciding
which languages to support is a bit of an arbitrary decision anyway, so
I would expect it's okay to differ from upstream in this regard).
Antonin