rust-lang / rust-lang/rust-analyzer
Missing prelude in rust-analyzer when using `build-std` in workspace
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- Dominant language
- Rust
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Description
rust-analyzer version: rust-analyzer 1.84.0-nightly (e7c0d27 2024-10-15)
rustc version: rustc 1.84.0-nightly (e7c0d2750 2024-10-15)
editor or extension: Emacs
code snippet to reproduce: full example
See linked repo for minimal example to reproduce.
When opening lib/src/lib.rs in editor, rust-analyzer gives errors saying that Option and other parts of Rust prelude is not in scope. The crate builds without errors using cargo build.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the linked minimal example and open lib/src/lib.rs in Emacs to reproduce the missing-prelude diagnostics. Compare rust-analyzer's errors with the successful cargo build, then verify that Option and other prelude items resolve correctly without introducing build errors.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- tooling
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100