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From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: Guix binary tarball
Date: Sun, 17 May 2015 23:34:49 +0200
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In-Reply-To: <87twvdcjwk.fsf@netris.org> (Mark H. Weaver's message of "Fri, 15
	May 2015 22:53:47 -0400")
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To: Mark H Weaver <mhw@netris.org>
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Mark H Weaver <mhw@netris.org> skribis:

> Andreas Enge <andreas@enge.fr> writes:
>
>>> > Could these directories be left out of the tarball and only their
>>> > contents be kept in?
>>> No.  Maybe we can fix it by using two tar invocations with different
>>> --owner.
>>
>> Well, you never know what permissions the directories have on the target
>> machine, and these are also changed. Maybe one needs to untar with parti=
cular
>> options.
>
> I looked in the GNU tar manual, and found this:
>
> `--no-overwrite-dir'
>      Preserve metadata of existing directories when extracting files
>      from an archive.  *Note Overwrite Old Files::.

I experimentally determined that --no-overwrite-dir has no effect but
that --skip-old-files does what we need: ownership and permissions on
/var and /root are preserved, and files are extracted correctly in those
directories.  Hence 8c3a5d7.

Thanks,
Ludo=E2=80=99.