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authorStuart Cook <Zalathar@users.noreply.github.com>2025-03-27 15:57:21 +1100
committerGitHub <noreply@github.com>2025-03-27 15:57:21 +1100
commitc45986ae61ed48e24720dd1fef0528873b8e356d (patch)
tree4d9d44ffbdaf1ea2fb8a5b2516a9f2f2c4a85d8d /compiler/rustc_query_system/src/query
parent2216f269c53594087dafeb99b435f1c9e3f9b7dc (diff)
parent632ce38c9a93a6ee890aedd99fcb1a61cabd0a46 (diff)
downloadrust-c45986ae61ed48e24720dd1fef0528873b8e356d.tar.gz
rust-c45986ae61ed48e24720dd1fef0528873b8e356d.zip
Rollup merge of #130883 - madsmtm:env-var-query, r=petrochenkov
Add environment variable query

Generally, `rustc` prefers command-line arguments, but in some cases, an environment variable really is the most sensible option. We should make sure that this works properly with the compiler's change-tracking mechanisms, such that changing the relevant environment variable causes a rebuild.

This PR is a first step forwards in doing that.

Part of the work needed to do https://github.com/rust-lang/rust/issues/118204, see https://github.com/rust-lang/rust/pull/129342 for some discussion.

r? ``@petrochenkov``
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