This is specifically meant for my regular reader known as "ta" from the British Antarctic Survey who was asking about CAD solutions on Linux. Anyone else interested in CAD should also find this helpful.
They were specifically asking about a multi-platform app called Draft Sight. After looking into things and attempting to install it I received this error saying it's the wrong architecture. This app is x86 only across the board as even the Mac version is Intel only. This could take weeks to port so at this moment in time at least that is unrealistic.
I did some research and found an alternative called LibreCAD which is apparently based on QCAD.
I was able to find and successfully install LibreCAD which appears to be capable enough but I am no CAD expert so I will leave that up to those that are. Here is a screenshot of it running on my Stormtrooper.
The way I installed it was with Synaptic but be aware that one of the archives within the package is damaged but the fix is very easy.
Method that worked for me:
1. Open Synaptic and search for LibreCAD
2. Double click it to mark for installation then click apply.
3. Click apply again in the window that pops up. Allow it to install.
If you have errors like I did then close Synaptic and fire up the LXTerminal.
sudo apt-get clean
After you enter your pass type:
sudo apt-get update
Launch Synaptic again and click the status button followed by the broken filter above. Right click LibreCAD and select 'Mark for reinstallation' followed by clicking apply.
After the one remaining package installs close Synaptic and enjoy some CAD play.
Let me know if you need more help and how you like LibreCAD.