SageMath Scilab interface not working

edit

I successfully did the sage -pip install scilab_kernel

I launched Sage's Jupyter Notebook server and now I can create a Jupyter worksheets with the Scilab kernel. The problem now is that the kernel dies immediately when I click on the first cell. It offers to restart the kernel, which a do, but then it dies again. Sometimes the kernel dies after a few second without me doing anything!

I proceeded to uninstall Scilab and install it on a folder with no spaces. I updated the path environment variable accordingly. I opened a sagemath notebook and run a scilab command, I got the same error as before. I opened a scilab notebook and the same as before, the kernel dies almost immediately.

I edited my answer, adding the following lines:

It also installs a scilab_kernel module in Sage's Python, located in

$SAGE_ROOT/local/lib/python2.7/site-packages/scilab_kernel

Go edit line 93 of the file

$SAGE_ROOT/local/lib/python2.7/site-packages/scilab_kernel/kernel.py

and change it from

        executable = self.executable + ' -nw'

to

        executable = self.executable + ' -nwni'

Please give it a try and report back!

I did the changes you suggest, but nothing changed: The Jupyter Notebook with SageMath 8.1 kernel and the command sage: scilab.eval('2+2') still complains about not been able to find scilab -nw and the Jupyter Notebook with the Scilab kernel dies almost immediately.

I noticed there is a kernel.pyc, which has binary code, in the same directory as kernel.py. Its timestamp is after the change in kernel.py so it seems to be compiled correctly.

Daniel

I installed SageMath 8.2 on Windows 10 Native, then installed scilab_kernel but the problem still remains: the kernel dies almost immediately after opening a new Jupiter Notebook with the scilab kernel.

I implemented your suggestion and I get

$ '/cygdrive/c/Program Files/scilab-6.0.1/bin/scilab -nw' bash: /cygdrive/c/Program Files/scilab-6.0.1/bin/scilab -nw: No such file or directory

or

$ '/cygdrive/c/Program Files/scilab-6.0.1/bin/scilab.bat -nw' bash: /cygdrive/c/Program Files/scilab-6.0.1/bin/scilab.bat -nw: No such file or directory

BTW, the command scilab -nw in a DOS Window works fine.

But this is not my main concern: I want to use Scilab in the Jupyter Notebook, what should I do?

Daniel

1) You are quoting the space between scilab and -nw, therefore trying to execute a program named scilab -nw (with a space inb its name), which doesn't exist. Try either :

'/cygdrive/c/Program Files/scilab-6.0.1/bin/scilab' -nw

or

/cygdrive/c/Program\ Files/scilab-6.0.1/bin/scilab -nw

I _told_ you quoting was tricky with Cygwin (and otherwise, BTW)...

2) As slelievre said, if you want to use Scilab directly (not through Sage), you have to install its kernel. But that's not what you asked for initially (your example uses the Sage-Scilab interface)... I'm still running H. sapiens sapiens L. V 1.0 (i. e. no telepathic interface), and couldn't guess this...

Fwiw there's nothing Cygwin-specific about that. True in any POSIX shell (which is why UNIX programs generally avoid spaces in anything, though it's true it's more of a problem on Cygwin since Windows programs do not avoid spaces as much...)