Hello, my name is Arindam Nandi, and I have been using the grpah-tool module for a college project. It was working absolutely fine on Ubuntu 13.04. Yesterday, I upgraded to the 14.04 LTS release of Ubuntu and tried installing the module the same way I did before, following the directions in your downloads page for Ubuntu. I added the lines deb http://downloads.skewed.de/apt/trusty trusty universe deb-src http://downloads.skewed.de/apt/trusty trusty universe to /etc/apt/sources.list, updated the repositories and then tried to install using sudo apt-get install python3-graph-tool But its giving me the following error: The following packages have unmet dependencies: python3-graph-tool : Depends: libpython3.3 (>= 3.3.3) but it is not installable E: Unable to correct problems, you have held broken packages. python-graph-tool is getting installed fine, but all my code is in Python3. I am a relative newbie to linux, so I am having trouble understanding what the problem is here, any help will be appreciated. Thanks. -- View this message in context: http://main-discussion-list-for-the-graph-tool-project.982480.n3.nabble.com/... Sent from the Main discussion list for the graph-tool project mailing list archive at Nabble.com.