ImportError: No module named sagenb on openSUSE

[qed777]

Florent Hivert reports on sage-release that Sage refuses to start after building 4.6.rc0 from scratch on openSUSE 11.3:

popcorn-*age/sage-4.6.rc0 $ ./sage 
[...]
    ImportError: No module named sagenb 

According to the thread, the problem seems to be that installing the sagenb package does not yield an

SAGE_ROOT/local/lib/python/site-packages/easy-install.pth

that contains any path to the Sage Notebook files.

This is a possible follow-up to #10097, which is supposed to replace the line ./sagenb-0.8.2-py2.6.egg --- inserted by setuptools into easy-install.pth --- with ../../../../devel/sagenb.

CC: @hivert @jasongrout @sagetrac-drkirkby @TimDumol @jdemeyer

Component: notebook

Reviewer: Leif Leonhardy

Issue created by migration from https://trac.sagemath.org/ticket/10176

[hivert]

comment:1

Hi there,

Actually I had the same error with a openSuSE 11.1 (64 bits if it maters).

[nexttime]

comment:3

Replying to @hivert:

Hi there,

Actually I had the same error with a openSuSE 11.1 (64 bits if it matters).

So we can exclude the possibility of a broken sed I guess...

I really would try just adding #!/usr/bin/env bash to (the generation of) SageNB's spkg-install, since apparently Sage 4.6.rc0 built fine and passed all tests on Skynet's OpenSuSE 11.1 box (menas).

(If one changes that, one could of course also add some debug code to see if and how the easy-install.pth gets modified; also, one should check more exit codes in the script.)

[nexttime]

comment:4

The attached patch to the SageNB spkg adds #!... and some error checking to its spkg-install, which now also prints the old and new SageNB path in easy-install.pth - at least for debugging...

Florent, please (apply,) build, test and report! ;-)

(I have no idea if that solves the problem, therefore a temporary patch and "needs info". At least we should hopefully be able to track this further down.)

---

To apply the patch, extract the original SageNB package (best from a Sage shell, since we need a suitable Python installation), cd to sagenb-0.8.7/src/sagenb/, then apply the patch and run ./spkg-dist to create a new sagenb-0.8.7-patched.spkg, located in sagenb-0.8.7/src/sagenb/dist/ (i.e., ./dist/).

[hivert]

comment:5

Florent, please (apply,) build, test and report! ;-)

Just to let you now: test in progress...

[hivert]

comment:6

The compilation of sage is not yet finished but from install.log

Finished processing dependencies for sagenb==0.8.7-patched
Old path: ""
New path: ""

real    0m25.564s
user    0m13.760s
sys     0m3.817s
Successfully installed sagenb-0.8.7-patched

[nexttime]

comment:7

Replying to @hivert:

The compilation of sage is not yet finished but from install.log

Finished processing dependencies for sagenb==0.8.7-patched
Old path: ""
New path: ""

real    0m25.564s
user    0m13.760s
sys     0m3.817s
Successfully installed sagenb-0.8.7-patched

Hmmm, so something else goes wrong (i.e. there's no sagenb path listed there at all, unless my grep failed for some reason...)

Btw, it should have been sufficient to just install the patched spkg.

Can you take a look at / post your $SAGE_ROOT/local/lib/python/site-packages/easy-install.pth?

Maybe we have a race condition in editing that? (You could retry with ./sage -f ... when your build has finished.)

[nexttime]

comment:8

Just for the record, I got:

...
Searching for setuptools==0.6c9
Best match: setuptools 0.6c9
Processing setuptools-0.6c9-py2.6.egg
setuptools 0.6c9 is already the active version in easy-install.pth
Installing easy_install script to /home/leif/Sage/sage-4.6.rc0-short-logs/local/bin
Installing easy_install-2.6 script to /home/leif/Sage/sage-4.6.rc0-short-logs/local/bin

Using /home/leif/Sage/sage-4.6.rc0-short-logs/local/lib/python2.6/site-packages/setuptools-0.6c9-py2.6.egg
Finished processing dependencies for sagenb==0.8.7-patched
Old path: "/home/leif/Sage/sage-4.6.rc0-short-logs/devel/sagenb-main"
New path: "../../../../devel/sagenb"

real	0m8.624s
user	0m5.800s
sys	0m2.570s
Successfully installed sagenb-0.8.7-patched
Now cleaning up tmp files.
Making Sage/Python scripts relocatable...
Making script relocatable
Finished installing sagenb-0.8.7-patched.spkg