When I'm installing
libxul-dev I end with this error message:
$ sudo apt-get install libxul-dev Reading package lists... Done Building dependency tree Reading state information... Done Package libxul-dev 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 libxul-dev has no installation candidate
How can I solve this?