GNU bug report logs - #34217
[PATCH 00/11] Add ruby-cucumber along with dependencies and a couple of updates.

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Message #88 received at 34217 <at> debbugs.gnu.org (full text, mbox):

From: Ricardo Wurmus <rekado <at> elephly.net>
To: Björn Höfling <bjoern.hoefling <at> bjoernhoefling.de>
Cc: 34217 <at> debbugs.gnu.org, Christopher Baines <mail <at> cbaines.net>
Subject: Re: [bug#34217] [PATCH 11/11] gnu: Add ruby-cucumber and ruby-aruba.
Date: Mon, 04 Feb 2019 00:26:59 +0100

Björn Höfling <bjoern.hoefling <at> bjoernhoefling.de> writes:

>> +    (propagated-inputs
>> +     (map (lambda (input)
>> +            (if (string=? (car input) "ruby-cucumber")
>> +                `("ruby-cucumber" ,ruby-cucumber-without-tests)
>> +                input))
>> +          (package-propagated-inputs ruby-aruba)))
>
> This is really nit-picking, I haven't tried it out myself and I haven't
> used it much myself, but I think this could be written more elegant with
> match-lambda [syntax errors might be included]:
>
>  (map (match-lambda
>        (("ruby-cucumber" . pkg)
>           `("ruby-cucumber" ,ruby-cucumber-without-tests))
> 	(input input)
> ...)

Or like this

    `(("ruby-cucumber" ,ruby-cucumber-without-tests)
      ,@(alist-delete "ruby-cucumber"
                      (package-propagated-inputs ruby-aruba)))

-- 
Ricardo

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