I tried to use Qt5 but I have some problems while making Debian packaging process with Qt5 so I would like to have Qt4 on Ubuntu 12.10. How can I install Qt4.
Just download Qt-4.8 from here and run the self-installer
or install it from ubuntu software center (two package)
The easy way (Ubuntu 14.1 LTS Server ) :
Note : PySide takes some time to build, but be patient.