CAELinux 2020 Helyx-OS and OpenFOAM version

Hello everyone, I just installed CAELinux 2020 and noticed some solvers don't work with Helyx OS. Upon further digging I realized Helyx OS 2.4 works with OpenFOAM 4.1 but CAELinux has openfoam7.
I tried to install 4.1 but I got the following error when following the Ubuntu instructions for installing OpenFOAM 4.1:
unable to fid package openfoam4

I'm currently in the process of compiling OpenFOAM 4.1 for Ubuntu 18.04 using the instructions here:

openfoamwiki.net/index.php/Installation/.../Ubuntu#Ubuntu_18.04
Has been running overnight and still not done

my bad, I'd only given the machine 1GB of RAM and 1 CPU. The compilation process only takes a minute or so. After pointing Helyx to the 4.x location, the solver now works.