93dece9ae7
PR #18043 changed flycheck to be scoped to the relevant package. This broke projects using check commands that invoke rustc directly, because diagnostic JSON from rustc doesn't contain the package ID. This was visible in the rust-analyzer logs when RA_LOG is set to `rust_analyzer::flycheck=trace`. Before: 2026-02-02T07:03:48.020184937-08:00 TRACE diagnostic received flycheck_id=0 mismatched types package_id=None scope=Workspace ... 2026-02-02T07:03:55.082046488-08:00 TRACE clearing diagnostics flycheck_id=0 scope=Workspace After: 2026-02-02T07:14:32.760707785-08:00 TRACE diagnostic received flycheck_id=0 mismatched types package_id=None scope=Package { package: BuildInfo { label: "fbcode//rust_devx/rust-guess-deps:rust-guess-deps" }, workspace_deps: Some({}) } ... 2026-02-02T07:14:48.355981415-08:00 TRACE clearing diagnostics flycheck_id=0 scope=Package { package: BuildInfo { label: "fbcode//rust_devx/rust-guess-deps:rust-guess-deps" }, workspace_deps: Some({}) } Previously r-a assumed that a diagnostic without a package ID applied to the whole workspace. We would insert the diagnostic at the workspace level, but then only clear diagnostics for the package. As a result, red squiggles would get 'stuck'. Users who had fixed compilation issues would still see the old red squiggles until they introduced a new compilation error. Instead, always apply diagnostics to the current package if flycheck is scoped to a package and the diagnostic doesn't specify a package. This makes CargoCheckEvent(None) and CargoCheckEvent(Some(_)) more consistent, as they now both match on scope. |
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This is the main source code repository for Rust. It contains the compiler, standard library, and documentation.
Why Rust?
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Performance: Fast and memory-efficient, suitable for critical services, embedded devices, and easily integrated with other languages.
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