tree 7903c3cf1498f4859739cf44c5564ef97da7cbae
parent 7c87ed4f3b38adfa4886ee1f89eaf0d7314439a4
author Adrian Taylor <adetaylor@chromium.org> 1648582169 -0700
committer Commit Bot <commit-bot@chromium.org> 1648600979 +0000

[rust-project] Record env vars

Some Rust procedural macros depend on the values of environment
variables available at compile time (typically for use inside an
include! directive to pull in generated code).

These environment variables must be made avaiable not just for the
procedural macro build, but for each invocation of it - so they need to
be available in all crates.

Informing rust-analyzer of these environment variables allows it to
expand more procedural macros and results in better source code
expansion.

Bug: chromium/1293933
Change-Id: Ic635d962ccd0782289e7f593118422086cbe8c49
Reviewed-on: https://gn-review.googlesource.com/c/gn/+/13360
Reviewed-by: Brett Wilson <brettw@chromium.org>
Commit-Queue: Brett Wilson <brettw@chromium.org>