stephan@s-desktop:~/Downloads/leksah$ sudo apt-cache policy libwebkit2gtk-4.0-dev
[sudo] password for stephan:
libwebkit2gtk-4.0-dev:
  Installed: (none)
  Candidate: 2.18.0-2
  Version table:
     2.18.0-2 500
        500 http://at.archive.ubuntu.com/ubuntu artful/main amd64 Packages