Tracking Issue for location-detail

[kornelski]

Summary

RFC: #2091
Original issue: rust-lang/rust#70580
Documentation: https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/location-detail.html

Before stabilizing location-detail, I'd like to try integrating it with Cargo, in the spirit of #12739

Unresolved Issues

• Should it support location-detail = false to mean "none"?
• For multi-valued option, is it okay to support "file,line" as a string, or should it be ["file", "line"] or both?

Future Extensions

No response

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