rust-lang / rust-lang/cargo-bisect-rustc

leverage existing rustup nightlies

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#52 3 comments 0 reactions 0 assignees View on GitHub

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A-downloading enhancement
Dominant language
Rust
Stars
206
Forks
60
PR merge metrics
No merged PRs in 30d

Description

We could avoid network traffic (which to me seems like the big bottleneck, at least when one isn't using the --preserve flag to cargo-bisect-rustc) by looking at what nightlies the user has already installed via rustup, and first testing them before exploring versions that we would have to download from the CI service.

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First steps

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start in cargo-bisect-rustc by tracing how nightly versions are selected and how versions are downloaded from the CI service. Check how rustup exposes already-installed nightlies and determine how the --preserve behavior fits into that flow. Done means installed nightlies are tested before versions that require network downloads, without losing the existing fallback.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
cli
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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