Self-Review Checklist: - [x] I've reviewed my own diff for quality, security, and reliability - [x] Unsafe blocks (if any) have justifying comments - [x] The content is consistent with the [UI/UX checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist) - [x] Tests cover the new/changed behavior - [x] Performance impact has been considered and is acceptable ## Details - The [devcontainer CLI writes the `devcontainer.metadata` label as a bare JSON object](https://github.com/devcontainers/cli/issues/1054) when there is only one metadata entry (e.g. docker-compose devcontainer with a Dockerfile and no features) - Zed's `deserialize_metadata` only accepted a JSON array, causing deserialization to fail with `invalid type: map, expected a sequence` - This made it impossible to attach to existing docker-compose devcontainers created by the devcontainer CLI or VS Code The fix tries parsing as an array first, then falls back to parsing as a single object wrapped in a vec. This mirrors how the [devcontainer CLI itself reads the label](https://github.com/devcontainers/cli/blob/main/src/spec-node/imageMetadata.ts#L476-L493). An upstream fix has also been submitted: https://github.com/devcontainers/cli/pull/1199 ## Reproduction 1. Create a docker-compose devcontainer with a Dockerfile and no features: `.devcontainer/devcontainer.json`: ```json { "name": "repro", "dockerComposeFile": "docker-compose.yml", "service": "app", "remoteUser": "root" } ``` `.devcontainer/docker-compose.yml`: ```yaml services: app: build: context: . dockerfile: Dockerfile command: sleep infinity volumes: - ..:/workspace ``` `.devcontainer/Dockerfile`: ```dockerfile FROM ubuntu:24.04 ``` 2. `devcontainer up --workspace-folder .` 3. Open the folder in Zed, fails with metadata deserialization error Release Notes: - Fixed attaching to a devcontainer that has a single metadata element which was started with `devcontainer-cli`
Zed
Welcome to Zed, a high-performance, multiplayer code editor from the creators of Atom and Tree-sitter.
Installation
On macOS, Linux, and Windows you can download Zed directly or install Zed via your local package manager (macOS/Linux/Windows).
Other platforms are not yet available:
- Web (tracking issue)
Developing Zed
Contributing
See CONTRIBUTING.md for ways you can contribute to Zed.
Also... we're hiring! Check out our jobs page for open roles.
Licensing
License information for third party dependencies must be correctly provided for CI to pass.
We use cargo-about to automatically comply with open source licenses. If CI is failing, check the following:
- Is it showing a
no license specifiederror for a crate you've created? If so, addpublish = falseunder[package]in your crate's Cargo.toml. - Is the error
failed to satisfy license requirementsfor a dependency? If so, first determine what license the project has and whether this system is sufficient to comply with this license's requirements. If you're unsure, ask a lawyer. Once you've verified that this system is acceptable add the license's SPDX identifier to theacceptedarray inscript/licenses/zed-licenses.toml. - Is
cargo-aboutunable to find the license for a dependency? If so, add a clarification field at the end ofscript/licenses/zed-licenses.toml, as specified in the cargo-about book.
Sponsorship
Zed is developed by Zed Industries, Inc., a for-profit company.
If you’d like to financially support the project, you can do so via GitHub Sponsors. Sponsorships go directly to Zed Industries and are used as general company revenue. There are no perks or entitlements associated with sponsorship.