Estou tentando instalar o kile usando este comando
sudo apt-get install kile
está mostrando erro
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
kile : Depends: kde-runtime (> 4:4.10) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
Então eu tentei este comando para adicionar PPA
sudo add-apt-repository ppa:kile/stable
está mostrando erro
sudo: add-apt-repository: command not found"
Para remover este problema, executei
sudo apt-get install software-properties-common python-software-properties
então está novamente mostrando a mensagem de erro
Package software-properties-common 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: Package 'software-properties-common' has no installation candidate
Por favor, ajude-me a resolver este problema.