While trying to install Directus in an ubuntu server I got an error from a composer dependency that
php5-mcrypt is not installed.
php5-mcrypt : Depends: libmcrypt4 but it is not installable
apt-get install php5-mcrypt didn't work.
apt-get update first didn't work either.
After some time figuring out what was the problem, I end up noticing that the
source.list file was missing.
The next question would be where do I find the official ubuntu repositories? Luckily I found this generator where you can select a ubuntu release and all the repositories you need and it generates a
Copying and pasting the new generate content to
source.list file, and then running
apt-get update, will updates the ubuntu package repositories.
apt-get install php5-mcrypt works.