Is it permissible for a Muslim residing in a non-Muslim country to rent out his shop to a non-Muslim who sells permissible products alongside some forbidden ones, such as cigarettes or non-halal meat, knowing that Muslim alternatives are scarce?

It is not permissible to rent out shops to those who sell prohibited items such as alcohol, pork, and cigarettes, because doing so involves an endorsement of or assistance in committing what is forbidden. This is prohibited whether in Muslim or non-Muslim countries, as it constitutes cooperation in sin and aggression.