[bug#29880] [PATCH] gnu: grep: Add PCRE support.

[Ludovic Courtès]

Hi Oleg,

Oleg Pykhalov <address@hidden> skribis:

> This patch allows to grep with perl regular expression.
>
> From db4fe96c7c6c0fcaa82e1131aba157c5d5e5f537 Mon Sep 17 00:00:00 2001
> From: Oleg Pykhalov <address@hidden>
> 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: address@hidden: probably vulnerable to 
CVE-2017-11164

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

What do people think?

Thanks,
Ludo’.