solver: mccs-cbc , mccs-lpsolve
upgrade: -lex[-new,-removed,-notuptodate]
dist-upgrade: -lex[-notuptodate,-new]
install: -lex[-removed,-changed]
remove: -lex[-removed,-changed]
trendy: -lex[-removed,-notuptodate,-unsat_recommends,-new]
paranoid: -lex[-removed,-changed]

solver: *
upgrade: -new,-removed,-notuptodate
dist-upgrade: -notuptodate,-new
install: -removed,-changed
remove: -removed,-changed
trendy: -removed,-notuptodate,-unsat_recommends,-new
paranoid: -removed,-changed