GNU bug report logs - #29880
[PATCH] gnu: grep: Add PCRE support.

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From: ludo <at> gnu.org (Ludovic Courtès)
To: Oleg Pykhalov <go.wigust <at> gmail.com>
Cc: 29880 <at> debbugs.gnu.org
Subject: [bug#29880] [PATCH] gnu: grep: Add PCRE support.
Date: Mon, 08 Jan 2018 10:08:12 +0100

Hi Oleg,

Oleg Pykhalov <go.wigust <at> gmail.com> skribis:

> This patch allows to grep with perl regular expression.
>
> From db4fe96c7c6c0fcaa82e1131aba157c5d5e5f537 Mon Sep 17 00:00:00 2001
> From: Oleg Pykhalov <go.wigust <at> gmail.com>
> Date: Thu, 28 Dec 2017 22:12:13 +0300
> Subject: [PATCH] gnu: grep: Add PCRE support.
>
> * gnu/packages/base.scm (grep)[inputs]: New field.

This would be for the next ‘core-updates’.  Did you try a full rebuild?

I’m mildly wary of this change because PCRE is a non-trivial piece of
software that increases the attack surface, and we’d end up grafting
things potentially often.  For instance, right now I get:

  $ guix lint pcre
  gnu/packages/pcre.scm:77:2: pcre <at> 8.41: probably vulnerable to CVE-2017-11164

Would it make sense to instead have a separate “grep-pcre”?

What do people think?

Thanks,
Ludo’.

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