[R-pkg-devel] Checksums changed on CRAN without any visible modifications to files.

[Joris Meys]

Dear Uwe,

Thank you for willing to take a look. In the report it was about the
following tarballs :

pkgmaker_0.22.tar.gz
rngtools_1.2.4.tar.gz
RcppProgress_0.4.tar.gz

Our sysadmin tried diff -ru, but couldn't find any difference in the text
files.

Cheers
Joris

On Thu, Jun 14, 2018 at 5:46 PM, Uwe Ligges <ligges using statistik.tu-dortmund.de
> wrote:

>
>
> On 13.06.2018 15:40, Joris Meys wrote:
>
>>
>>
>> On Wed, Jun 13, 2018 at 3:16 PM, Uwe Ligges <
>> ligges using statistik.tu-dortmund.de <mailto:ligges using statistik.tu-dortmund.de>>
>> wrote:
>>
>>
>>     When CRAN repacks and changes the DESCRIPTION file, the checksums
>>     change, of course.
>>
>>     Best,
>>     Uwe Ligges
>>
>>
>> Dear Uwe,
>>
>> I understood that from the previous issue. In this case however, none of
>> the files -including the DESCRIPTION file- were changed. Am I right in
>> suspecting that a package is repacked when moved to the archive?
>>
>
> No, we do not repack generally then. Perhaps the package got orphaned?
>
>
> Which package / tarball were you talking about? I can take a look why that
> one was changed and inspect why the checksum changed.
>
> Best,
> Uwe Ligges
>
>
>
>  I
>
>> suspect that the tool used to repack the package is using gzip, and it is
>> possible to repack without adding a timestamp as explained here :
>>
>> https://serverfault.com/questions/110208/different-md5sums-
>> for-same-tar-contents
>>
>> I can explain the different checksums when some things are changed to our
>> HPC sysadmins, but they have -understandibly- difficulties with checksums
>> changing for released source tarballs. Is it possible to adapt the
>> archiving so that at least for identical tarballs the md5 sums remain the
>> same? Or if you have other suggestions to deal with this without having to
>> change hardcoded checksums in the easybuild repos, that would be very
>> welcome too.
>>
>> Cheers
>> Joris
>>
>> --
>> Joris Meys
>> Statistical consultant
>>
>> Department of Data Analysis and Mathematical Modelling
>> Ghent University
>> Coupure Links 653, B-9000 Gent (Belgium)
>> <https://maps.google.com/?q=Coupure+links+653,%C2%A0B-9000+
>> Gent,%C2%A0Belgium&entry=gmail&source=g>
>>
>> tel: +32 (0)9 264 61 79
>> -----------
>> Biowiskundedagen 2017-2018
>> http://www.biowiskundedagen.ugent.be/
>>
>> -------------------------------
>> Disclaimer : http://helpdesk.ugent.be/e-maildisclaimer.php
>>
>


-- 
Joris Meys
Statistical consultant

Department of Data Analysis and Mathematical Modelling
Ghent University
Coupure Links 653, B-9000 Gent (Belgium)
<https://maps.google.com/?q=Coupure+links+653,%C2%A0B-9000+Gent,%C2%A0Belgium&entry=gmail&source=g>

tel: +32 (0)9 264 61 79
-----------
Biowiskundedagen 2017-2018
http://www.biowiskundedagen.ugent.be/

-------------------------------
Disclaimer : http://helpdesk.ugent.be/e-maildisclaimer.php

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