Install Failure about django-cas-ng

[imradhakrishnan]

I am using Django 1.11.6 with django-cas-ng 3.5.1, python-cas 1.1.0. I am still facing this issue. Any help is appreciated. Thanks!

[mhcesped]

I was having this problem too. To fix it I had to uninstall python-cas, django-cas-ng and django-cas-client, then I re-installed django-cas-ng and it was solved ... surely there is some incompatibility with django-cas-client.

Hope this help.

[nitmir]

python-cas==1.1.0 is listed in the requirement.txt file
It is available via pip or here https://github.com/python-cas/python-cas

[wcc526]

I have try install python-cas,but it is still failure. Does it django-cas-ng is a runable project?

[nitmir]

I run it on production without any troubles. I've installed both python-cas and django-cas-ng from git repository with a sudo make install.
How are you installing it ? from pip ?

[VDaric]

Hello,

I installed django-cas-ng with pip.

I first got the same error as wc526 : ImportError: cannot import name CASClient.
After a modification in django_cas_ng/utils.py file (#72). [replacing "from cas import CASClient" by
"from caslib import CASClient"] and I installed caslib (from pip) but I am still having an error.

This time it seems to be caslib related problem :
...lib/python3.4/site-packages/caslib/init.py", line 21, in
from cas_dance import *
ImportError: No module named 'cas_dance'

I replaced "from cas_dance import *" in caslib/init.py with from caslib.cas_dance import *

This time I got :

message = 'CAS got an INVALID TICKET %r' % ticket ^
TabError: inconsistent use of tabs and spaces in indentation

cas_dance file is messing tabs & spaces.....

Feels like I am living a Never nding story ... caslib is not Python3 compliant.

Here is (a part of) my pip freeze output:
caslib==0.3.1
django-cas-ng==3.5.1
python-cas==1.1.0

I am running Django==1.8.6 with Python3.4.3.

[nitmir]

This project do not use caslib. python-cas provide the cas module used by the statement from cas import CASClient https://github.com/python-cas/python-cas/blob/master/cas.py#L26

┬────────────────────────────────┬──────────────────────────────────────────────
│ 16:52, jeudi 19 novembre 2015  │
└────────────────────────────────┘

─( 16:52:30 )─< ~ >───────────────────────────────────────────────────────[ 0 ]─
valentin@nashi $ mktemp -d
/tmp/tmp.LcmGsEc5y4
─( 16:52:32 )─< ~ >───────────────────────────────────────────────────────[ 0 ]─
valentin@nashi $ virtualenv /tmp/tmp.LcmGsEc5y4
Running virtualenv with interpreter /usr/bin/python2
New python executable in /tmp/tmp.LcmGsEc5y4/bin/python2
Also creating executable in /tmp/tmp.LcmGsEc5y4/bin/python
Installing setuptools, pip...done.
─( 16:52:38 )─< ~ >───────────────────────────────────────────────────────[ 0 ]─
valentin@nashi $ . /tmp/tmp.LcmGsEc5y4/bin/activate
─( 16:52:46 )─< ~ >───────────────────────────────────────────────────────[ 0 ]─
valentin@nashi $ pip install python-cas django-cas-ng
Downloading/unpacking python-cas
  Downloading python-cas-1.1.0.tar.gz
  Running setup.py (path:/tmp/pip-build-GbfB_r/python-cas/setup.py) egg_info for package python-cas
    WARNING: '.' not a valid package name; please use only.-separated package names in setup.py

    package init file '__init__.py' not found (or not a regular file)
Downloading/unpacking django-cas-ng
  Downloading django-cas-ng-3.5.1.tar.gz
  Running setup.py (path:/tmp/pip-build-GbfB_r/django-cas-ng/setup.py) egg_info for package django-cas-ng

Downloading/unpacking six (from python-cas)
  Downloading six-1.10.0-py2.py3-none-any.whl
Downloading/unpacking Django>=1.5 (from django-cas-ng)
  Downloading Django-1.8.6-py2.py3-none-any.whl (6.2MB): 6.2MB downloaded
Installing collected packages: python-cas, django-cas-ng, six, Django
  Running setup.py install for python-cas
    WARNING: '.' not a valid package name; please use only.-separated package names in setup.py
    package init file '__init__.py' not found (or not a regular file)

  Running setup.py install for django-cas-ng

Successfully installed python-cas django-cas-ng six Django
Cleaning up...
─( 16:53:03 )─< ~ >────────────────────────────────────────────────────────────────────────────────[ 0 ]─
valentin@nashi $ python -c "import cas; print cas.__file__"
/tmp/tmp.LcmGsEc5y4/local/lib/python2.7/site-packages/cas.pyc

[nitmir]

However, it could be nice to have pip to auto install python-cas on django-cas-ng install.
@mingchen maybe add python-cas in the install_requires of setup.py ?
I do not known how pip handle dependencies.

[bgroff]

If python-cas is in the install_requires, pip should grab and install it when installing django-cas-ng. I agree that python-cas should be installed when installing django-cas-ng.

[mingchen]

Added python-cas to install_requires.

[wcc526]

@VDaric I suggest you use the https://bitbucket.org/cpcc/django-cas this repo,It's more stable,If you have any problem you can contact with me by gmail. wcc526#gmail.com

[nitmir]

@wcc526 @VDaric It will depend of the features you needs. Among those supported by django-cas-ng not supported by django-cas :

• support of CAS 3.0: i.e. be able to use attributes transmitted by the CAS
• support of Single Sign Out (login-out from the CAS (from anywhere) will cause a logout from django)
• be able to emit proxy ticket to allow django to login to some backends (I use it to login to an XMPP server in prebind mode and to users ftp accounts with a web interface)

[nitmir]

Also note that the split between django-cas-ng and python-cas is very recent (it was a single project until 2c046f1) thus it's not odd the see some packaging issues.

Thanks for reporting.

[VDaric]

Everything works nice now. I just "pip installed" python-cas.

Thanks !

[JohnnyZ]

I am using DJango 1.11.6 with cas-ng 3.5.1 and python-cas 1.2 and also still have this issue.

@imradhakrishnan - did you find a solution?

[caixinglobus]

I was having this problem too. To fix it I had to uninstall python-cas, django-cas-ng and django-cas-client, then I re-installed django-cas-ng and it was solved ... surely there is some incompatibility with django-cas-client.

Hope this help.

helps a lot!