Zig AstGen changes, unnecessary use of 'var'

[llogick]

• ziglang/zig@941090d
• compiler: add error for unnecessary use of 'var' ziglang/zig#18017

This can be merged as-is, or we can wait and see if I missed changing a var to const somewhere.

[Techatrix]

Our dependencies will also need to be updated:

• correct unnecessary uses of 'var' ziglibs/diffz#16
• correct unnecessary uses of 'var' ziglibs/known-folders#41
• binned_allocator.zig How am I supposed to edit/fix/PR a gist?

[llogick]

* [binned_allocator.zig](https://gist.github.com/antlilja/8372900fcc09e38d7b0b6bbaddad3904) How am I supposed to edit/fix/PR a gist?

That gist has changed hands as many times as it's been updated, you have the choice of converting in to a repo.

[Techatrix]

@SuperAuguste Can I create this as a new repository in zigtools?

[SuperAuguste]

sure @Techatrix! tbh I don't believe there's a lot of external interest in using the binned allocator so you could also just plop it in a file in the zls repo :P

[Techatrix]

I guess that would also work. I though there were other project that also used the binned allocator but sourcegraph search couldn't find any.

@nullptrdevs Would you mind If I added the binned allocator in your PR directly?

[llogick]

@nullptrdevs Would you mind If I added the binned allocator in your PR directly?

Go ahead, and always feel free to make changes/push commits to any of my PRs ! I always push --force-with-lease whenever I remember to :)

[SuperAuguste]

LGTM; took it for a spin on ZLS for a bit and didn't encounter any crashes or anything :) (every PR I merge without fuzzing reminds me that I should really finish that code :/)