# Problem with Mopidy extension development in Eclipse
**URL:** https://discourse.mopidy.com/t/problem-with-mopidy-extension-development-in-eclipse/672
**Category:** Misc
**Created:** [April 7, 2015, 3:29pm UTC](https://discourse.mopidy.com/t/problem-with-mopidy-extension-development-in-eclipse/672 "2015-04-07T15:29:32Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Johannes](https://discourse.mopidy.com/u/Johannes)
#### Post date: [April 7, 2015, 3:29pm UTC](https://discourse.mopidy.com/t/problem-with-mopidy-extension-development-in-eclipse/672/1 "2015-04-07T15:29:32Z")
Hi,
I’m using mopidy-tunein. I want to find out why one of my favorite stations doesn’t work. I followed the steps for setting up the development environment and I mopidy works as it should and I can use the extension.
I’d like to debug it though. I don’t have much experience with Python. I chose Eclipse/PyDev as an IDE and managed to start mopidy within it. However there it does not recognize the extension. I assume this is because PyDev has no clue of the virtualenv. How can I fix this? Also if there is an easier alternative to Eclipse please let me know …
Best
Johannes
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### Author:  [@Johannes](https://discourse.mopidy.com/u/Johannes)
#### Post date: [April 7, 2015, 4:23pm UTC](https://discourse.mopidy.com/t/problem-with-mopidy-extension-development-in-eclipse/672/2 "2015-04-07T16:23:03Z")
Alright, I found out how to solve this. Similar as to this [description](http://www.michaelpollmeier.com/eclipse-pydev-and-virtualenv/) what I had to do was this:
Set up eclipse to use the python wrapper in the virtual environment
Go to Window -\> Preferences -\> Interpreter Python
and create a new interpreter. Select the python wrapper from the virtual environment ($HOME/.virtualenvs/mopidy/bin/python/python2.7). The libraries should be selected automatically - leave them as they are. In the project properties change the interpreter to use the newly created one (Project -\> Properties -\> PyDev Python Interpreter)