-sudo aptitude install -y libcv{4,-dev} opencv-doc libcvaux-dev python-opencv \
- libx11-dev libxext-dev libxss-dev libhighgui-dev
+sudo aptitude install -y libcv2.1 libcvaux2.1 libcvaux-dev opencv-doc \
+ python-opencv libx11-dev libxext-dev libxss-dev libhighgui-dev