GNU bug report logs - #66753
grep 3.8 now needs pcre2 as input, not pcre

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#66753: closed (grep 3.8 now needs pcre2 as input, not pcre)
Date: Mon, 22 Jan 2024 04:35:02 +0000

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Your message dated Sun, 21 Jan 2024 23:34:30 -0500
with message-id <87fryq56ll.fsf <at> gmail.com>
and subject line Re: bug#66753: grep 3.8 now needs pcre2 as input, not pcre
has caused the debbugs.gnu.org bug report #66753,
regarding grep 3.8 now needs pcre2 as input, not pcre
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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From: Matt Beshara <m <at> mfa.pw>
To: bug-guix <at> gnu.org
Subject: grep 3.8 now needs pcre2 as input, not pcre
Date: Thu, 26 Oct 2023 09:21:24 +1100

Hi Guix people,
I have been working on creating a package definition for 
pulseaudio-equalizer¹ and when built with the current definition 
of the grep package, it prints this error message when running:

grep: Perl matching not supported in a --disable-perl-regexp build
grep: write error: Broken pipe

Searching for that error message, I came across this:
https://trac.macports.org/ticket/65800

So it seems that, for version 3.8, the pcre input package for grep 
should be changed to pcre2.  I have made this change in a new 
definition which inherits grep and told my pulseaudio-equalizer 
package to use that as a propagated input, and that causes the 
error to go away.  For the sake of completeness, here’s the 
definition I used:

(define grep-fixed
 (package
   (inherit grep)
   (inputs (list pcre2))))

Best wishes,
Matt

1. https://github.com/pulseaudio-equalizer-ladspa/equalizer

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From: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
To: Matt Beshara <m <at> mfa.pw>
Cc: 66753-done <at> debbugs.gnu.org
Subject: Re: bug#66753: grep 3.8 now needs pcre2 as input, not pcre
Date: Sun, 21 Jan 2024 23:34:30 -0500

Hi,

Matt Beshara <m <at> mfa.pw> writes:

> Hi Guix people,
> I have been working on creating a package definition for
> pulseaudio-equalizer¹ and when built with the current definition of
> the grep package, it prints this error message when running:
>
> grep: Perl matching not supported in a --disable-perl-regexp build
> grep: write error: Broken pipe
>
> Searching for that error message, I came across this:
> https://trac.macports.org/ticket/65800
>
> So it seems that, for version 3.8, the pcre input package for grep
> should be changed to pcre2.  I have made this change in a new
> definition which inherits grep and told my pulseaudio-equalizer
> package to use that as a propagated input, and that causes the error
> to go away.  For the sake of completeness, here’s the definition I
> used:
>
> (define grep-fixed
>  (package
>    (inherit grep)
>    (inputs (list pcre2))))
>
> Best wishes,
> Matt

This appears to have been fixed independently by spacecadet in commit
5b0cea02358044f0cc695bacc3f44db1e220239b ("gnu: grep: Fix PCRE matches
(grep -P).").

Closing!

-- 
Thanks,
Maxim

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