Bug#896220: python-lasagne: lasagne fails to import

[Adrian Bunk]

Control: reassign -1 python-theano 0.9.0+dfsg-2
Control: retitle -1 python-theano fails to load without nonexisting HOME
Control: affects -1 python-lasagne
Control: severity -1 important
Control: reassign 896421 python3-theano 0.9.0+dfsg-2
Control: retitle 896421 python3-theano fails to load with nonexisting HOME
Control: affects 896421 python3-lasagne
Control: severity 896421 important

On Fri, Apr 20, 2018 at 10:00:53PM +0200, Helmut Grohne wrote:
> Package: python-lasagne
> Version: 0.1+git20180322.37ca134-1
> Severity: serious
> User: helmutg at debian.org
> Usertags: python-import
> 
> After installing python-lasagne importing the module lasagne
> into a python interpreter fails with the following error:
> 
> Traceback (most recent call last):
>   File "<string>", line 1, in <module>
>   File "/usr/lib/python2.7/dist-packages/lasagne/__init__.py", line 12, in <module>
>     import theano
>   File "/usr/lib/python2.7/dist-packages/theano/__init__.py", line 66, in <module>
>     from theano.compile import (
>   File "/usr/lib/python2.7/dist-packages/theano/compile/__init__.py", line 10, in <module>
>     from theano.compile.function_module import *
>   File "/usr/lib/python2.7/dist-packages/theano/compile/function_module.py", line 21, in <module>
>     import theano.compile.mode
>   File "/usr/lib/python2.7/dist-packages/theano/compile/mode.py", line 10, in <module>
>     import theano.gof.vm
>   File "/usr/lib/python2.7/dist-packages/theano/gof/vm.py", line 662, in <module>
>     from . import lazylinker_c
>   File "/usr/lib/python2.7/dist-packages/theano/gof/lazylinker_c.py", line 42, in <module>
>     location = os.path.join(config.compiledir, 'lazylinker_ext')
>   File "/usr/lib/python2.7/dist-packages/theano/configparser.py", line 333, in __get__
>     self.__set__(cls, val_str)
>   File "/usr/lib/python2.7/dist-packages/theano/configparser.py", line 344, in __set__
>     self.val = self.filter(val)
>   File "/usr/lib/python2.7/dist-packages/theano/configdefaults.py", line 1745, in filter_compiledir
>     " '%s'. Check the permissions." % path)
> ValueError: Unable to create the compiledir directory '/nonexistent/.theano/compiledir_Linux-4.14--amd64-x86_64-with-debian-buster-sid--2.7.15rc1-64'. Check the permissions.
>...

The problem is in theano.

And depending on the circumstances (I cannot judge it here) it might not 
even be a bug that this module expect a $HOME that points to a real location.

> Helmut

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed