[Debian-science-sagemath] Fwd: sagemath_7.4-1_amd64.changes is NEW

[Jerome BENOIT]

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Hello Ximin,

On 17/12/16 12:32, Ximin Luo wrote:
> Jerome BENOIT:
>> [..]
>> 
>> No need, the ideal wish is already patched. It was patched by the
>> Debian maintainer himself (me): Sorry I forgot this part of the
>> story; and I should document further this feature (I am agree). The
>> concerned patch is d/p/upstream-system_wide.patch [1]. Details can
>> be found in the header of the path. The involved environment
>> variable is SYMPOW_CACHEDIR :
>> 
>> Assuming that the user has a HOME, let launch the sample script:
>> 
>> $ /usr/share/doc/sympow/examples/samples.sh
>> 
>> Data are put in $HOME/.sympow
>> 
>> Now, assuming some /scratch space, let do:
>> 
>> $ mkdir -p /scratch/$USR/sympow $
>> SYMPOW_CACHEDIR=/scratch/$USR/sympow
>> /usr/share/doc/sympow/examples/samples.sh
>> 
>> Now data are put in /scratch/$USR/sympow .
>> 
>> [..]
>> 
>> 
>> At the time of writing the patch, I guessed that HOME does always
>> exist. This is my major mistake.
>> 
>> So, the issue solved.
>> 
>> Having said that, I am on my way to see how I can improve the
>> visibility of this patched material.
>> 
> 
> Ah, yes I didn't notice.
> 
> It would be good if sympow could automatically create SYMPOW_CACHEDIR
> if it doesn't exist. Otherwise, I would have to add this logic to
> Sage, which seems a bit unclean.

I not so sure that it is a good idea to create SYMPOW_CACHEDIR on the fly.
Not that if SYMPOW_CACHEDIR does not exist, an appropraite message is printed.

> 
> It already creates it for the default value ~/.sympow, but not when
> SYMPOW_CACHEDIR is different:

This the historical default. And in GNU/Liunux system, it quite common for
a software to have such a folder (see ssh(1)).

What do you mean by `add this logic to Sage' ?
At running time ? at Building time ?
the upstream software Sage ? the Debian package ?


> 
> # creates ~/.sympow/ automatically $ rm -rf ~/.sympow/ $ sympow 
> sympow 1.023 RELEASE (Debian 1.023-7)  (c) Mark Watkins --- see
> README and COPYING for details ^C 130
> 
> # doesn't create SYMPOW_CACHEDIR=xxx automatically $
> HOME=/sbuild-nonexistent SYMPOW_CACHEDIR=$PWD/sympow sympow sympow
> 1.023 RELEASE (Debian 1.023-7)  (c) Mark Watkins --- see README and
> COPYING for details **ERROR** cache directory
> /home/infinity0/var/lib/sage/sympow does not exist 255 $ mkdir
> sympow $ HOME=/sbuild-nonexistent SYMPOW_CACHEDIR=$PWD/sympow sympow 
> sympow 1.023 RELEASE (Debian 1.023-7)  (c) Mark Watkins --- see
> README and COPYING for details ^C 130

I do not see it as a BUG but as a feature.
I am open to rethink about.

Thanks,
Jerome

> 
> X
> 

- -- 
Jerome BENOIT, Ph.D. | jgmbenoit-at+rezozer*dot_net
http://www.rezozer.net/

- -- 
Jerome BENOIT | calculus+at-rezozer^dot*net
https://qa.debian.org/developer.php?login=calculus@rezozer.net
AE28 AE15 710D FF1D 87E5  A762 3F92 19A6 7F36 C68B
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