dependency.rb in arborist-0.2.0

- old
+ new

@@ -219,15 +219,27 @@
 
 
 	### Return an English description of why this dependency is not met. If it is
 	### met, returns +nil+.
 	def down_reason
-		ids = self.down_identifiers
-		subdeps = self.down_subdeps
+		parts = [
+			self.down_primary_reasons,
+			self.down_secondary_reasons
+		].compact
 
-		return nil if ids.empty? && subdeps.empty?
+		return nil if parts.empty?
 
+		return parts.join( '; ' )
+	end
+
+
+	### Return an English description of why any first tier dependencies are not met,
+	### or +nil+ if there are none.
+	def down_primary_reasons
+		ids = self.down_identifiers
+		return nil if ids.empty?
+
 		msg = nil
 		case self.behavior
 		when :all
 			msg = ids.first.dup
 			if ids.size == 1
@@ -243,11 +255,19 @@
 			msg << " as of %s" % [ self.latest_down_time ]
 
 		else
 			raise "Don't know how to build a description of down behavior for %p" % [ self.behavior ]
 		end
+	end
 
-		return msg
+
+	### Return an English description of why any subdependencies are not met,
+	### or +nil+ if there are none.
+	def down_secondary_reasons
+		subdeps = self.down_subdeps
+		return nil if subdeps.empty?
+
+		return subdeps.map( &:down_reason ).join( ' and ' )
 	end
 
 
 	### Return the entire dependency tree as a nested Hash.
 	def to_h