# Objective

Get rid of instances of the `block` crate, as it will not compile in a
future version of Rust. This gets rid of the `block` crate inside of
`gpui_macos`, which means were on the home stretch.

## Solution

Migrate `screen_capture.rs` completely to `objc2`. While a more targeted
fix is theoretically possible, there were enough upsides where I thought
this was worth a full migration.

Completely gets rid of the `media` crate, which had manual bindings to
`core_media`, which `objc2` can provide. Gets rid of tons of unsafe
code, and a lot of code in general.

## Testing

Tested manual sharing inside of a Zed channel

Release Notes:

- N/A
- [GPUI] Migrated macOS screen capture to `objc2`