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Greptile Summary

This PR fixes musl detection for the Bun plugin on Linux. Previously, the fallback path in BunPlugin::is_musl() used cfg!(target_env = "musl"), a compile-time constant that would always be false when mise itself was compiled for a glibc target — even if it was running on a musl system like Alpine. The fix replaces that with detect_libc() == Some("musl"), which uses the existing platform::detect_libc runtime detection logic.

• The detect_libc() function already handles the gcompat/Alpine edge case by checking /etc/os-release before inspecting linker files, so the runtime detection is accurate across common Linux distributions.
• On non-Linux platforms detect_libc() returns None, so the behaviour is unchanged there.

Confidence Score: 5/5

Safe to merge — a one-line logic change backed by an existing runtime detection function that already handles known edge cases.

The change swaps a baked-in compile-time assumption for the existing detect_libc() runtime check, which handles the Alpine + gcompat case, linker file inspection, and a compile-time fallback internally. Non-Linux behaviour is unchanged since detect_libc() returns None there.

No files require special attention.

Important Files Changed

_{Reviews (2): Last reviewed commit: "fix(bun): improve musl detection logic u..." | Re-trigger Greptile}