getDepsList
  :: GenericPackageDescription
  -> (GenericPackageDescription -> [(a, CondTree b [Dependency] c)])
  -> [Dependency]
getDepsList d f = concatMap getDependencies . map snd . f $ d
getDepsList
  :: GenericPackageDescription
  -> (GenericPackageDescription -> [(a, CondTree b [Dependency] c)])
  -> [Dependency]
getDepsList d f = concatMap getDependencies . map snd . f $ d
getDepsList d f = concatMap getDependencies . map snd . f $ d