New version of graphviz

[miguelmarco]

For some reason, i get a segfault when i try to system-wide graphviz from sage, and the current experimental spkg fails to install, so i updated it. It now installs on my systems and works ok.

https://drive.google.com/file/d/0B_B7eBQ-W5NGNVBSR3RCTlJRMEk/edit?usp=sharing

CC: @nthiery @rlmill @mwhansen @nathanncohen @jdemeyer @haraldschilly

Component: packages: experimental

Author: Miguel Marco

Reviewer: Nathann Cohen

Issue created by migration from https://trac.sagemath.org/ticket/15933

[nathanncohen]

comment:2

Hello !

Well, the spkg works (even though I expected it to be a bzip2 file instead of a gzip file), but how exactly can this spkg be used through Sage so that I may test it ?

Nathann

[miguelmarco]

comment:4

The situation where i used it is in the singular interface.

$ sage -singular
                     SINGULAR                                 /  Development
 A Computer Algebra System for Polynomial Computations       /   version 3-1-6
                                                           0<
 by: W. Decker, G.-M. Greuel, G. Pfister, H. Schoenemann     \   Dec 2012
FB Mathematik der Universitaet, D-67653 Kaiserslautern        \
> LIB "all.lib";;

(all of output about the libraries loaded)

> ring r=0,(x,y),dp;
> ideal i=x2-y3;
> list L=resolve(i);
> ResTree(L,collectDiv(L)[1],"output");
Currently showing graphics in separate window
Press <Return> to continue
sh: /usr/bin/X11/xv: No such file or directory
pause>
> 

It creates a text file called output, and tries to call "dot" on it. But it fails, and creates an empty file output.jpg

With this new version, it creates the file output.jpg as expected.

Once you have the file output created, you can try to call dot manually on it:

$ sage -sh

Starting subshell with Sage environment variables set.  Don't forget
to exit when you are done.  Beware:
 * Do not do anything with other copies of Sage on your system.
 * Do not use this for installing Sage packages using "sage -i" or for
   running "make" at Sage's root directory.  These should be done
   outside the Sage shell.

Bypassing shell configuration files...

Note: SAGE_ROOT=/home/mmarco/sagedevel/sage
(sage-sh) mmarco@localhost:sage$ dot -Tjpg output -o output.jpg
segmentation fault

But with the spkg installed, it just creates the output.jpg file as expected.

[nathanncohen]

comment:5

Your message is badly formatted, it looks like you repeated the same thing three times. Could you clean it please ?

[miguelmarco]

comment:6

Yes, sorry, it is corrected now.

[nathanncohen]

comment:7

Okayyyyyy okay. Well, both work on my computer, but I guess it cannot hurt to update the spkg and it does solve your problem. Good ! :-)

Nathann

[nathanncohen]

Reviewer: Nathann Cohen

[vbraun]

comment:8

Harald, can you add this to the experimental spkgs?

[haraldschilly]

comment:9

ok, done.

... and PS: and for the future, could we avoid sharing spkg files via such web based tools? it's kind of tedious to move them to the sever that way :-\

[vbraun]

Author: Marc Mezzarobba

[mezzarobba]

Changed author from Marc Mezzarobba to Miguel Marco

[mezzarobba]

comment:11

I don't remember changing the description of this ticket, though apparently I did. But I'm quite certain I didn't prepare the updated spkg!