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Restrict sysroot crate imports to those defined in this repo.

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It's common to import dependencies from the sysroot via `extern crate`
rather than use an explicit cargo dependency, when it's necessary to use
the same dependency version as used by rustc itself. However, this is
dangerous for crates.io crates, since rustc may not pull in the
dependency on some targets, or may pull in multiple versions. In both
cases, the `extern crate` fails to resolve.

To address this, re-export all such dependencies from the appropriate
`rustc_*` crates, and use this alias from crates which would otherwise
need to use `extern crate`.
This commit is contained in:
Diggory Blake 2025-07-06 20:58:14 +01:00
parent e100792918
commit c6a952159f
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51 changed files with 193 additions and 151 deletions
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1
compiler/rustc_log/Cargo.toml
View file

@ -6,6 +6,7 @@ edition = "2024"
[dependencies]
# tidy-alphabetical-start
tracing = "0.1.41"
tracing-core = "0.1.34"
tracing-subscriber = { version = "0.3.3", default-features = false, features = ["fmt", "env-filter", "smallvec", "parking_lot", "ansi"] }
tracing-tree = "0.3.1"
# tidy-alphabetical-end

2
compiler/rustc_log/src/lib.rs
View file

@ -44,6 +44,8 @@ use tracing_subscriber::filter::{Directive, EnvFilter, LevelFilter};
use tracing_subscriber::fmt::FmtContext;
use tracing_subscriber::fmt::format::{self, FormatEvent, FormatFields};
use tracing_subscriber::layer::SubscriberExt;
// Re-export tracing
pub use {tracing, tracing_core, tracing_subscriber};
/// The values of all the environment variables that matter for configuring a logger.
/// Errors are explicitly preserved so that we can share error handling.