# doc: mention zig can't use URLs if their content changes · gitcafe/zig

[View on GitCafe](https://git.cafe/gitcafe/zig/commit/77c63ac36034db577a9287c54fb6771429a7428f)

Repository: [gitcafe/zig](https://git.cafe/gitcafe/zig)

Visibility: public

Requested revision: 77c63ac36034db577a9287c54fb6771429a7428f

Requested commit: 77c63ac36034db577a9287c54fb6771429a7428f

Commit: 77c63ac36034db577a9287c54fb6771429a7428f

Tree: b18749386ae77c8dabcd1f96d42e6eb7bdc13b61

Author: Jonathan Marler

Committer: Andrew Kelley

## Message

```
doc: mention zig can't use URLs if their content changes

There's been some proliferation of dependency URLs that reference
mutable data such as links to git branches that can change.  This has
resulted in broken projects, i.e.

* https://github.com/RohanVashisht1234/raylib_rain_train/blob/9eef9de94c511f2eb4fe5db1d6abd574ee245c9b/build.zig.zon
* https://github.com/rcmagic/ZigFightingGame/commit/4b64353e9c69de0fa2eb87fa9c3a3da76a8a3e7b

There's also disagreement about whether it's fine for URL's to point to
git branches, i.e.

https://github.com/Not-Nik/raylib-zig/pull/130

This updates the docs to mention that zig won't be able to use URLs if
their content changes.

```

## Parents

- [0ff0bdb4a71d8fd055272abfdadea2f23f99574a](https://git.cafe/gitcafe/zig/commit/0ff0bdb4a71d8fd055272abfdadea2f23f99574a?format=markdown)

[Source at this commit](https://git.cafe/gitcafe/zig/tree/77c63ac36034db577a9287c54fb6771429a7428f?format=markdown)