Assuming you have the dependencies; checking out the source from github, and then typing (inside the directory that contains mintcoin-qt.pro file) :[...]
paspi, could you create VM instance of Manjaro Linux and try to install mintcoin-qt on it? I would be most grateful!
For others: if you succeeded in installing mintcoin-qt on youx Linux box by following exactly paspi's instructions, please mention it (and correct/complete the instructions if needed). I will write an article on mintcoin-central.