I’d like to try and help bring this to a conclusion - I do not have a strong opinion. I am going to try and take it bit by bit.
Firstly
I really like this idea for the install path - logical and easily maintained. I propose we adopt this for installing the repos.
Is there anything else to consider? Default permissions?
I have implemented the /opt/emoncms & /opt/openenergymonitor installation directories in a EmonScripts development branch here: Implementation of /opt/emoncms & /opt/openenergymonitor installation directories by TrystanLea · Pull Request #3 · openenergymonitor/EmonScripts · GitHub
I’m also working through the support for this in emoncms.
I think moving away from the $usrdir and $homedir naming is a good idea, Im not 100% on the separation of the openenergymonitor directory and the emoncms directory but I cant also see a strong reason against it, so have decided to take your direction and make the change.
Update: Testing a full image build with the oem_emoncms_dirs development branch works great.