[bug#40556] [PATCH] gnu: dovecot: Add libunwind input.

[Tobias Geerinckx-Rice]

Pierre,

Pierre Langlois 写道：
> I wonder what's wrong with backtrace_symbols() in guix, I'm not 
> sure how
> to investigate that. For now though, what do you think of using
> libunwind?

OK, but it should only be included on platforms that require it:

 ;; Untested…
 (inputs
  `(…
    ,@(match (%current-system)
        ((or "aarch64-linux" "armhf-linux" …)
         `(("libunwind" ,libunwind)))
        (_ `()))
    …))

Could you test that?

Kind regards,

T G-R

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