[ckan-dev] extension issues: ckanext-scheming

Fri Oct 28 23:58:47 UTC 2016

Hi -

We have CKAN 2.5.2 up and running on CentOS 6.8

I have been trying to install ckanext-scheming
The pip install actually went fine...

But when I tried to add scheming_datasets to the ckan.plugins setting in 
the production.ini file-- I got this error:

ImportError: No module named scheming.plugins

The entire trace-back follows--

Thanks in advance for any and all help!

BTW: can anyone suggest the BEST way to extend the metadata schema?
(I have found two so far, this extension and IDatasetForm, which I also 
had trouble with)
...I get the feeling I am somehow making this extension stuff harder 
than it should be :)

- Thomas Heetderks

------------
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142] mod_wsgi 
(pid=12165): Target WSGI script '/etc/ckan/default/apache.wsgi' cannot 
be loaded as Python module.
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142] mod_wsgi 
(pid=12165): Exception occurred processing WSGI script 
'/etc/ckan/default/apache.wsgi'.
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142] Traceback 
(most recent call last):
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142]   File 
"/etc/ckan/default/apache.wsgi", line 18, in <module>
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142] application = 
loadapp('config:%s' % config_filepath)
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142]   File 
"/usr/local/lib/python2.7/site-packages/paste/deploy/loadwsgi.py", line 
247, in loadapp
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142] return 
loadobj(APP, uri, name=name, **kw)
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142]   File 
"/usr/local/lib/python2.7/site-packages/paste/deploy/loadwsgi.py", line 
272, in loadobj
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142] return 
context.create()
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142]   File 
"/usr/local/lib/python2.7/site-packages/paste/deploy/loadwsgi.py", line 
710, in create
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142] return 
self.object_type.invoke(self)
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142]   File 
"/usr/local/lib/python2.7/site-packages/paste/deploy/loadwsgi.py", line 
146, in invoke
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142] return 
fix_call(context.object, context.global_conf, **context.local_conf)
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142]   File 
"/usr/local/lib/python2.7/site-packages/paste/deploy/util.py", line 55, 
in fix_call
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142]     val = 
callable(*args, **kw)
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142]   File 
"/usr/lib/ckan/default/src/ckan/ckan/config/middleware.py", line 58, in 
make_app
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142] 
load_environment(conf, app_conf)
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142]   File 
"/usr/lib/ckan/default/src/ckan/ckan/config/environment.py", line 232, 
in load_environment
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142] p.load_all(config)
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142]   File 
"/usr/lib/ckan/default/src/ckan/ckan/plugins/core.py", line 134, in load_all
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142] load(*plugins)
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142]   File 
"/usr/lib/ckan/default/src/ckan/ckan/plugins/core.py", line 148, in load
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142] service = 
_get_service(plugin)
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142]   File 
"/usr/lib/ckan/default/src/ckan/ckan/plugins/core.py", line 254, in 
_get_service
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142] return 
plugin.load()(name=plugin_name)
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142]   File 
"/usr/lib/ckan/default/lib/python2.7/site-packages/pkg_resources/__init__.py", 
line 2235, in load
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142] return 
self.resolve()
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142]   File 
"/usr/lib/ckan/default/lib/python2.7/site-packages/pkg_resources/__init__.py", 
line 2241, in resolve
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142] module = 
__import__(self.module_name, fromlist=['__name__'], level=0)
[Fri Oct 28 13:00:38 2016] [error] [client 52.57.242.142] ImportError: 
No module named scheming.plugins
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