Here is a list of all documented enum values with links to the class documentation for each member:

• AlreadyRetried : nix::DerivationGoal
• CachedFailure : nix::BuildResult
• NoNeed : nix::DerivationGoal
• tMisc : nix::InputAccessor
• TransientFailure : nix::BuildResult
• YesNeed : nix::DerivationGoal