Please support a "system" toolchain
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- Dominant language
- Rust
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Description
I'd like to be able to test things using my system-installed version of Rust, and also use nightly Rust via rustup. To support this, I'd love to have support in rustup for a "system" toolchain, which would allow cargo +system, or setting system as the default and using cargo +nightly.
When using the "system" toolchain, the various rustup-managed binaries would simply forward to the corresponding system binaries.
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 from the requested behaviors: cargo +system, a system default, and cargo +nightly; then trace rustup's toolchain-selection and binary-forwarding entry points. Done means system-installed Rust binaries are used for system while rustup-managed toolchains, including nightly, remain selectable.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- devtools
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 32/100