Tracking Issue for proc_macro::{tracked_env, tracked_path} · Issue #99515 · rust-lang/rust (original) (raw)

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Feature gate: #![feature(proc_macro_tracked_env, track_path)]

This is a tracking issue for proc_macro::tracked*, to allow adding files and environment variables to the build system's dependency tracking.

// proc_macro

mod tracked_env { pub fn var<K: AsRef + AsRef>(key: K) -> Result<String, VarError>; }

mod tracked_path { pub fn path<P: AsRef>(path: P); }

Implementation of tracked_env::var: proc_macro: Add API for tracked access to environment variables #74653
Implementation of tracked_path::path: add track_path::path fn for usage in proc_macros #84029
Add tracking issue: Use new tracking issue for proc_macro::tracked_*. #99516
Change path to accept AsRef<Path> instead of AsRef<str>
Design the public API
Documentation
Final comment period (FCP)
Stabilization PR

The full API design.
- The implementaiton PRs were mostly focussed on the implementation details behind the scenes of proc_macro, but there's barely been any discussion on the public interface.