I have Debian Jessie (amd64 with i386 multiarch) installed on my system. But there are some packages not available for installation, although they should.I am trying to install mysql-client, but I get this error:$ apt-get install mysql-clientReading package lists... DoneBuilding dependency tree       Reading state information... DonePackage mysql-client is a virtual package provided by:mysql-client-5.5 5.5.57-0+deb8u1 [Not candidate version]mysql-client-5.5 5.5.55-0+deb8u1 [Not candidate version]E: Package 'mysql-client' has no installation candidateTrying to install mysql-client-5.5 tells a bit more:$ apt-get install mysql-client-5.5Reading package lists... DoneBuilding dependency tree       Reading state information... DonePackage mysql-client-5.5 is not available, but is referred to by another package.This may mean that the package is missing, has been obsoleted, oris only available from another sourceMy sources.list looks like this:deb http://ftp.de.debian.org/debian/ jessie main contrib non-freedeb http://security.debian.org/ jessie/updates main contrib non-freedeb http://ftp.de.debian.org/debian/ jessie-updates main contrib non-freedeb https://dl.winehq.org/wine-builds/debian/ jessie mainHow can I fix this strange behaviour?UPDATEDoing a apt-cache search mysql only prints these few packages. That does not seem correct to me.akonadi-backend-mysql - MySQL storage backend for Akonadilibreoffice-base-drivers - Database connectivity drivers for LibreOfficelibmysqlclient18 - MySQL database client librarymysql-common - MySQL database common files, e.g. /etc/mysql/my.cnfmysql-server-core-5.5 - MySQL database server binariesphp5-sqlite - SQLite module for php5libqt4-sql-mysql - Qt 4 MySQL database driverlibrdf0 - Redland Resource Description Framework (RDF) libraryrsyslog - reliable system and kernel logging daemon
Why are some packages not available in my Debian Jessie installation?
debian;apt;dpkg