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Add a note to discourage the use of -Zminimal-versions. #7549

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Oct 28, 2019
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Add a note to discourage the use of -Zminimal-versions. #7549

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6 changes: 6 additions & 0 deletions src/doc/src/reference/unstable.md
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Expand Up @@ -44,6 +44,12 @@ generated if dev-dependencies are skipped.
* Original Issue: [#4100](https://github.com/rust-lang/cargo/issues/4100)
* Tracking Issue: [#5657](https://github.com/rust-lang/cargo/issues/5657)

> Note: It is not recommended to use this feature. Because it enforces minimal
> versions for all transitive dependencies, its usefulness is limited since
> not all external dependencies declare proper lower version bounds. It is
> intended that it will be changed in the future to only enforce minimal
> versions for direct dependencies.

When a `Cargo.lock` file is generated, the `-Z minimal-versions` flag will
resolve the dependencies to the minimum semver version that will satisfy the
requirements (instead of the greatest version).
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