Wednesday, December 12, 2018
sudo apt install psychopy
This gives you quite an out of date version (1.85.3, released Aug 2017, for Ubuntu 18.04, as of Dec 2018), but trying to build it from source, or with pip, is just a huge time sink, often fails, and can kinda mess up your system in the process.
This leads to a further recommendation. For archive purposes, archive your .py file as well as your .psyexp file, as more recent versions of Builder produce .psyexp files that are not backwards compatible!
In fact, for portability, seriously consider treating PsychoPy mainly as a Python library, and develop experiments entirely as .py files, i.e. avoid Builder entirely. Builder is a good teaching tool, but anyone who can write R scripts can also learn how to write experiments directly in Python.