We ran into an odd issue with Pyramid installation on Linux (Ubuntu). The installation was failing for no good reason. And there is no point in delving into the logs as the solution was found. It was the host name that the installation program didn't like for some reason. It was "7525a64", assigned automaticaly when the machine was provisioned. Changing it to "pyramid" solved the problem. We wanted to make you aware of this if you run into a similar problem.