• PackageTransition

case

Package (transition) situation

Flags for new A package

Flags for new B package

#1

Conflicts: never work together

Conflicts: B

Conflicts: A

#2

Resolved conflicts: old A and B conflicted with each other and with new ones; only newer A and B can coexist

Breaks: B (<<2)

Breaks: A (<<2)

#3

Virtual package: normal virtual package which avoids Conflicts using update-alternatives(8) etc.

Provides: virt

Provides: virt

#4

Exclusive virtual package: exclusive virtual package such as mail-transport-agent

Provides: virt

Provides: virt

Conflicts: virt

Conflicts: virt

Replaces: virt

Replaces: virt

#5

Rename: only A existed; move everything from A into B; make A a transitional package without real contents

Depends: B

Breaks: A (<<2)

Replaces: A (<<2)

optional* -- Provides: A

#6

Merge: A and B existed; merge everything from A into B; make A a transitional package without real contents

Depends: B (>=2)

Breaks: A (<<2)

Replaces: A (<<2)

optional* -- Provides: A

#7

Split: only A existed; move some files from A to B; new A does not require new B

Breaks: A (<<2)

Replacess: A (<<2)

#8

Split: only A existed; move some files from A to B; new A always requires new B

Depends: B

Breaks: A (<<2)

Replacess: A (<<2)

#9

Reorg: A and B existed; move some files from A to B; new A does not require new B

Breaks: B (<<2)

Breaks: A (<<2)

Replaces: A (<<2)

#10

Reorg: A and B existed; move some files from A to B; new A always requires new B

Depends: B (>=2)

Breaks: A (<<2)

Replaces: A (<<2)

#11 ??

Merge and remove: A and B existed; merge everything from A into B; A does not exist in new archive; B is the functioning package

(non-existing)

Breaks: A (<<2) (for backport ease)

Replaces: A (<<2)

optional* -- Provides: A

#12 ??

Remove transitional: A existed as a transitional package without real contents in previous release; A does not exist in new archive; B is the functioning package

(non-existing)

optional* -- Provides: A (?? is this enough ??)