* apt-get install graphviz xdot gtkwave
* apt-get install python3-venv
* apt-get install python-virtualenv # this is an alternative to python3-venv
+* apt-get install tcl-dev libreadline-dev bison flex libffi-dev iverilog
* return to user prompt (ctrl-d)
+(The above assumes that you are running Debian.)
+
This will get you python3 and other tools that are needed. [graphviz](https://graphviz.org/) is essential for showing the interconnections between cells, and [gtkwave](http://gtkwave.sourceforge.net/) is essential for debugging.
If you would like to save yourself a lot more typing, check out the