From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: guix-package --roll-back
Date: Tue, 01 Jan 2013 23:58:51 +0100
Message-ID: <87a9ssecic.fsf@gnu.org>
References: <871uejyq9z.fsf@karetnikov.org> <874nj4sbfe.fsf@karetnikov.org>
	<87y5gf8sm1.fsf@gnu.org> <87obh980pr.fsf@karetnikov.org>
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In-Reply-To: <87obh980pr.fsf@karetnikov.org> (Nikita Karetnikov's message of
	"Tue, 01 Jan 2013 08:57:47 -0500")
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To: Nikita Karetnikov <nikita@karetnikov.org>
Cc: bug-guix@gnu.org

Nikita Karetnikov <nikita@karetnikov.org> skribis:

>> It should be based on rename(2) to be atomic.  See the =E2=80=98switchLi=
nk=E2=80=99
>> function in Nix for how to do it.
>
> Could you elaborate? Should I call C from Guile?

No no, Scheme code can use =E2=80=98rename-file=E2=80=99, which calls renam=
e(2).

Ludo=E2=80=99.