Packages with the fileinfo use flag

dev-lang

dev-lang / php : The PHP language runtime engine

  • Add fileinfo extension support

dev-php

dev-php / PEAR-HTTP_Request2 : Provides an easy way to perform HTTP requests

  • Force dev-lang/php to be compiled with fileinfo extension

mail-client

mail-client / roundcube : A browser-based multilingual IMAP client with an application-like user interface

  • Use the dev-lang/php fileinfo extension to guess the mime_type of attachments