Yeah I said 4.3 instead of 4.6. Sorry to confuse.
I installed under home because that’s the default for the Qt installer. When I install through the snap store it goes in /snap.
And there is no package qt6-base in ubuntu. qt6-core was installed when I was trying in Manjaro. I have packages qt-framework and qt-framework-6-6-core22 installed under Ubuntu which goes under /snap. I have tried adding qmake from all of them.