This PR introduces support for Next Edit Suggestions while doing away
with calling legacy endpoints. In the process we've also removed support
for cycling completions, as NES will give us a single prediction, for
the most part.
Closes#30124
Release Notes:
- Zed now supports Copilot's [Next Edit
Suggestions](https://code.visualstudio.com/blogs/2025/02/12/next-edit-suggestions).
When no predictions are available for the current buffer, we will now
attempt to predict at the closest diagnostic from the cursor location
that wasn't included in the last prediction request. This enables a
commonly desired kind of far-away jump without requiring explicit model
support.
Release Notes:
- N/A
```json
"edit_predictions": {
"codestral": {
"api_url": "https://codestral.mistral.ai",
"model": "codestral-latest",
"max_tokens": 150
}
},
```
Release Notes:
- Added support for changing the Codestral endpoint. This was discussed
at #34371.
---------
Co-authored-by: Bennet Bo Fenner <bennetbo@gmx.de>
We've been considering removing workspace-hack for a couple reasons:
- Lukas ran into a situation where its build script seemed to be causing
spurious rebuilds. This seems more likely to be a cargo bug than an
issue with workspace-hack itself (given that it has an empty build
script), but we don't necessarily want to take the time to hunt that
down right now.
- Marshall mentioned hakari interacts poorly with automated crate
updates (in our case provided by rennovate) because you'd need to have
`cargo hakari generate && cargo hakari manage-deps` after their changes
and we prefer to not have actions that make commits.
Currently removing workspace-hack causes our workspace to grow from
~1700 to ~2000 crates being built (depending on platform), which is
mainly a problem when you're building the whole workspace or running
tests across the the normal and remote binaries (which is where
feature-unification nets us the most sharing). It doesn't impact
incremental times noticeably when you're just iterating on `-p zed`, and
we'll hopefully get these savings back in the future when
rust-lang/cargo#14774 (which re-implements the functionality of hakari)
is finished.
Release Notes:
- N/A
Release Notes:
- Added Codestral edit predictions provider which can be enabled by adding an API key in the Mistral section of agent settings.

## Config
Get API key from https://console.mistral.ai/codestral and add it in the Mistral section of the agent settings.
```
"features": {
"edit_prediction_provider": "codestral"
},
"edit_predictions": {
"codestral": {
"model": "codestral-latest",
"max_tokens": 150
}
},
```
---------
Co-authored-by: Michael Sloan <michael@zed.dev>