Issue description

Some programs have issues on NixOS because files copied from nix store are read only.

This results in permission errors like this:

PermissionError: [Errno 13] Permission denied: '/home/davidak/.openshot_qt/title/temp.svg'

Is there any way to solve it for us or do we rely on upstream to fix it? What can we suggest them as a better way doing it?

I had this multiple times: #32898 #43685

Some developers refuse to fix such errors: "Both 1970 dates and invalid permissions are caused by NixOS being crazy, not Nikola."