Public bug reported: This is an old bug since 2012, upstream bug report: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=689082
Tested on Xenial, when trying to install libxcomposite-dev:i386, the 64bit version will be removed: $ sudo apt-get install libxcomposite-dev:i386 Reading package lists... Done Building dependency tree Reading state information... Done The following additional packages will be installed: libxcomposite1:i386 The following packages will be REMOVED: libxcomposite-dev The following NEW packages will be installed: libxcomposite-dev:i386 libxcomposite1:i386 0 upgraded, 2 newly installed, 1 to remove and 0 not upgraded. Need to get 17.5 kB of archives. After this operation, 46.1 kB of additional disk space will be used. Do you want to continue? [Y/n] ** Affects: libxcomposite (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1657385 Title: libxcomposite-dev is not Multi-Arch compatible To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libxcomposite/+bug/1657385/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs