GNU bug report logs - #38436
[PATCH] gnu; Add gfortran-toolchain

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Message #35 received at 38436 <at> debbugs.gnu.org (full text, mbox):

From: Konrad Hinsen <konrad.hinsen <at> fastmail.net>
To: Ludovic Courtès <ludo <at> gnu.org>
Cc: 38436 <at> debbugs.gnu.org
Subject: Re: [bug#38436] [PATCH] gnu: Add gfortran-toolchain
Date: Thu, 12 Dec 2019 16:19:24 +0100

Hi Ludo,

> The exact rule is given the the ‘--keyword’ options in
> po/packages/Makevars.  Namely, xgettext will recognize:

Great, good to know!

>   (let-syntax ((synopsis (syntax-rules () ((_ str) str))))
>     (make-gcc-toolchain gfortran #:synopsis (synopsis "…")))
>
> Quite an effort for this little thing, but I couldn’t find of anything
> simpler.

It looks like I still don't understand how this works. Why wouldn't
the simpler

   (let ((synopsis (lambda (_) _)))
     (make-gcc-toolchain gfortran #:synopsis (synopsis "…")))

be sufficient? And is there a good reason to prefer such constructs
to

  (define-public gfortran-toolchain
   (package (inherit (make-gcc-toolchain gfortran))
     (synopsis ...)
     (description ...)

which I think expresses the intention more clearly?

Cheers,
  Konrad

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