installing QTVCP

i followed the pinned post here for installing and i get this:

nate@linuxcnc-laptop:~$ desginer -qt=5
bash: desginer: command not found

Yep, i think i typed that out fast for the forum, also the laptop will just be for learning when I cant make it out to the shop.

Selection? 3

installing common tools
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Package qttools5-dev-tools is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Unable to locate package qttools5-dev
E: Package 'qttools5-dev-tools' has no installation candidate

installing python3 tools
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package libpython3-dev

create plugin link at:
~/.designer/plugins/python/


Installation complete, designer can be started with:

designer -qt=5

nate@linuxcnc-laptop:~$ designer -qt=5
bash: designer: command not found

What version of linux are you using?