Conflict Resolution Strategy - Incumbent Dependency Downgrade

[brendanjerwin]

See "Dependency Version Leveling"

If the conflicting package is itself a dependency of another package, like NHibernate in our example, the next approach that Nu can try is to see if, by downgrading the conflicting package, it can find a compatible set. In this case, Nu will attempt to downgrade NHibernate, within the dependency requirements of all packages which depend on it, until it finds a compatible set or runs out of available options. For each compatibility check Nu will execute the entire stack of rules, i.e. it will first look for Dependency Version Overlap, and then attempt to downgrade Castle Windsor using Newcomer Downgrade. If Nu is able to find a workable set here it will also do so automatically, since the downgrades were within the declared compatible versions of the installed package (Fluent NHibernate).