Error typesetting mathematics

[Jan Groenewald]

Hi

With sage 6.6 (PPA from buildslave binary) on Ubuntu 14.04, firefox 37, I get

Error typesetting mathematics

in every cell. Also if you check the boxes live3D or use java. Any idea?

Regards,

Jan

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[Volker Braun]

Did you try multiple browsers? Whats in the error console?

[Jan Groenewald]

Hi

Yes, it occurs in chromium-browser as well.

There is no error in the console.

Regards,

Jan

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[Volker Braun]

We added a mathjax spkg in 6.6 (and bumped the mathjax version). My guess would be that the PPA doesn't install it correctly...

On Saturday, April 25, 2015 at 9:14:28 AM UTC-4, Jan Groenewald wrote:

There is no error in the console.

The javascript console in the browser, not the unix console 

[Jan Groenewald]

Hi

See attached, 404 while fetching

http://localhost:8080/javascript/mathjax/MathJax.js?config=TeX-AMS_HTML-full,../../dynamic/mathjax_sage.js

Which seems to be at /usr/lib/sagemath/local/lib/python2.7/site-packages/sagenb-0.11.4-py2.7.egg/sagenb/data/sage/js/mathjax_sage.js

Regards,

Jan

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[Jan Groenewald]

Hi

I don't get this with a from-source compile. Will try the compiled binary (which I made the PPA from) as soon as I can.

Regards,

Jan

[Jan Groenewald]

Hi

It also works in the binary. The PPA does not recompile, it only copies the binary files into place. I'm not sure why the URL to load mathjax is different in the binary and the PPA, or where to start looking.

See attached the successful mathjax.

Regards,

Jan

[Volker Braun]

The mathjax directory is symlinked... when you say "copy", are you handling symlinks correctly?

[Jan Groenewald]

Hi

Yes, the debian package file called rules/install copies files into place from an untarred binary.

0 jan@snapperkob:~/src/sagemath-upstream-binary/sagemath-upstream-binary/debian$cat install
# to instruct dh_install
amd64/bootstrap /usr/lib/sagemath
amd64/build /usr/lib/sagemath
amd64/config /usr/lib/sagemath
amd64/configure /usr/lib/sagemath
amd64/configure.ac /usr/lib/sagemath
amd64/local /usr/lib/sagemath
amd64/m4 /usr/lib/sagemath
amd64/sage /usr/lib/sagemath
amd64/src /usr/lib/sagemath
amd64/.git /usr/lib/sagemath
amd64/.gitignore /usr/lib/sagemath
amd64/COPYING.txt  /usr/lib/sagemath
amd64/Makefile /usr/lib/sagemath
amd64/README.txt /usr/lib/sagemath
amd64/VERSION.txt /usr/lib/sagemath
debian/sagemath.desktop /usr/share/applications
0 jan@snapperkob:~/src/sagemath-upstream-binary/sagemath-upstream-binary/debian$

The files are:
0 jan@snapperkob:/usr/lib/sagemath$ls -l
total 404
-rw-r--r--  1 root root  70547 Apr 18 02:17 COPYING.txt
-rw-r--r--  1 root root   5844 Apr 18 02:17 Makefile
-rw-r--r--  1 root root  13940 Apr 18 02:17 README.txt
-rw-r--r--  1 root root     38 Apr 18 02:17 VERSION.txt
-rwxr-xr-x  1 root root   3630 Apr 18 02:17 bootstrap
drwxr-xr-x  3 root root   4096 Apr 25 06:39 build
drwxr-xr-x  2 root root   4096 Apr 25 06:39 config
-rwxr-xr-x  1 root root 249151 Apr 18 02:21 configure
-rw-r--r--  1 root root  25671 Apr 18 02:17 configure.ac
drwxr-xr-x 12 root root   4096 Apr 25 06:39 local
drwxr-xr-x  2 root root   4096 Apr 25 06:39 m4
-rwxr-xr-x  1 root root   4816 Apr 18 02:17 sage
drwxr-xr-x 10 root root   4096 Apr 25 06:39 src
0 jan@snapperkob:/usr/lib/sagemath$

The symlinks are:

Binary:
0 jan@osprey:~/src/sage-6.6-x86_64-Linux$find . -type l -iname '*mathjax*' -exec ls -l '{}' \;
lrwxrwxrwx 1 jan jan 32 Apr 18 00:19 ./local/lib/python2.7/site-packages/sagenb-0.11.4-py2.7.egg/sagenb/data/mathjax -> ../../../../../../share/mathjax/
lrwxrwxrwx 1 jan jan 32 Apr 18 00:13 ./local/lib/python2.7/site-packages/IPython/html/static/mathjax -> ../../../../../../share/mathjax/
0 jan@osprey:~/src/sage-6.6-x86_64-Linux$

But PPA:
0 jan@snapperkob:/usr/lib/sagemath$find . -type l -iname '*mathjax*' -exec ls -l '{}' \;
lrwxrwxrwx 1 root root 31 Apr 24 17:49 ./local/lib/python2.7/site-packages/IPython/html/static/mathjax -> ../../../../../../share/mathjax
0 jan@snapperkob:/usr/lib/sagemath$

Bizarre.

0 jan@snapperkob:/usr/lib/sagemath$ls -lda ./local/lib/python2.7/site-packages/sagenb-0.11.4-py2.7.egg/sagenb/data/mathjax                            
drwxr-xr-x 2 root root 4096 Apr 25 06:39 ./local/lib/python2.7/site-packages/sagenb-0.11.4-py2.7.egg/sagenb/data/mathjax
0 jan@snapperkob:/usr/lib/sagemath$ls -a ./local/lib/python2.7/site-packages/sagenb-0.11.4-py2.7.egg/sagenb/data/mathjax
.  ..
0 jan@snapperkob:/usr/lib/sagemath$file ./local/lib/python2.7/site-packages/sagenb-0.11.4-py2.7.egg/sagenb/data/mathjax                      
./local/lib/python2.7/site-packages/sagenb-0.11.4-py2.7.egg/sagenb/data/mathjax: directory
0 jan@snapperkob:/usr/lib/sagemath$

Yet, there are plenty of symlinks preserved just fine:
0 jan@snapperkob:/usr/lib/sagemath$find . -type l | wc -l
1171
0 jan@snapperkob:/usr/lib/sagemath$

I'll have a closer look which could take a few days.

Regards,

Jan

[Jan Groenewald]

Hi

I have a new 6.6ppa1 version uploaded which fixes this. It is an ugly hack to replace the mathjax folder with a symlink the way it should be, in the debian/rules file; symlink it before installing all the files. Unfortunately it also contains a sagenb version number in the path, and I'm not sure how to get to the root cause of this.

0 jan@snapperkob:~/src/sagemath-upstream-binary/sagemath-upstream-binary/debian$grep -A1 mathjax rules
        dh_link ../../../../../../share/mathjax/ /usr/lib/sagemath/local/lib/python2.7/site-packages/sagenb-0.11.4-py2.7.egg/sagenb/data/mathjax
        dh_install

Thanks for the tip Volker.

Regards,

Jan

[Jan Groenewald]

Hi

It could be that from sage 6.6 sagenotebook stopped including the empty data/mathjax folder and that changed to a symlink.  (I just spotted that empty folder in a 6.4.1 install).

Dpkg won't mess with that during an upgrade:

https://wiki.debian.org/Teams/Dpkg/FAQ#Q:_Will_dpkg_replace_a_symlink_with_a_directory_or_vice_versa.3F

So this could be limited to the 6.5->6.6 upgrade; i.e. if that mathjax stays a symlink from now on, I can take my ugly hack out again.

It also means first removing/purging 6.5 then installing 6.6, or a brand new install of 6.6, would not have shown this issue.

So such a hack will only be necessary whenever a symlink changes to a directory or vice versa.

It's been suggested to me to keep a list of symlinks and do preinst stuff like rmdir.  Not sure I will get to that.

Regards,

Jan