
Will I be able to use the PPAs for Ubuntu?-No, Ubuntu PPAs are for Ubuntu only.-ĮDIT: Actually, it looks like Linux Mint can use PPAs: I wonder if there might be some problems because of this. I eventually decided to use Linux Mint 17.1 instead of Ubuntu 14.04.1 LTS. However, they don't care about each other's existence. They are not linked in any way, except that both Qt Creator and KDE are built using Qt libraries. Shall I expect some problems when using Qt Creator with Ubuntu intead of Kubuntu?No. I reckon that Qt Creator is somehow linked with KDE. Is GCC 4.9.1 supported?Do you mean Qt or Qt Creator?

This repo tends to lag behind by a few versions. Note that Ubuntu itself has its own official repository containing Qt and Qt Creator. It is completely independent from Ubuntu. Which one updates itself with Ubuntu?The PPA will update when the PPA maintainers decide to update it. What if I install using the PPA method? Will the 64 bit version be installed into 64 bit Ubuntu? May I expect some problems if not?You will need to ask the creators of the PPA. Which one is more reliable (has less bugs once installed)? The manual method offers 64 bit installation. Will all the settings and projects remain there after the process?Yes. And how difficult is to upgrade the Qt that was installed manually?It's very easy - the online installer gives you a graphical package manager.
