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Ch. 14: clarify workspace dependency reuse 

Fixes #3141
This commit is contained in:
Chris Krycho 2024-04-17 11:40:43 -06:00
parent 7f2149c356
commit 1221096717
1 changed files with 8 additions and 3 deletions
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src/ch14-03-cargo-workspaces.md
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@ -267,10 +267,15 @@ error[E0432]: unresolved import `rand`
To fix this, edit the *Cargo.toml* file for the `adder` package and indicate
that `rand` is a dependency for it as well. Building the `adder` package will
add `rand` to the list of dependencies for `adder` in *Cargo.lock*, but no
additional copies of `rand` will be downloaded. Cargo has ensured that every
additional copies of `rand` will be downloaded. Cargo will ensure that every
crate in every package in the workspace using the `rand` package will be using
the same version, saving us space and ensuring that the crates in the workspace
will be compatible with each other.
the same version as long as they specify compatible versions of `rand`, saving
us space and ensuring that the crates in the workspace will be compatible with
each other.
If crates in the workspace specify incompatible versions of the same dependency,
Cargo will resolve each of them, but will still try to resolve as few versions
as possible.
#### Adding a Test to a Workspace