Package: sourcea
Version: 1
Architecture: all
Build-Depends: bina [alpha], binb [! alpha]

Package: sourceb
Version: 2
Architecture: any
Build-Depends: bina, binb | binc
Build-Conflicts: bind

Package: sourcec
Version: 2
Architecture: amd64 i386
Build-Depends: bina, binb | binc
Build-Conflicts: bind
