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Add link to explanations about dep-info files

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Guillaume Gomez 2023-12-20 15:37:45 +01:00
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3
src/doc/unstable-book/src/compiler-flags/env.md
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@ -8,7 +8,8 @@ This option flag allows to specify environment variables value at compile time t
used by `env!` and `option_env!` macros. It also impacts `tracked_env::var` function
from the `proc_macro` crate.
This information will be stored in the dep-info files.
This information will be stored in the dep-info files. For more information about
dep-info files, take a look [here](https://doc.rust-lang.org/cargo/guide/build-cache.html#dep-info-files).
When retrieving an environment variable value, the one specified by `--env` will take
precedence. For example, if you want have `PATH=a` in your environment and pass: