notThisPackageVersion :: PackageIdentifier -> Dependency
notThisPackageVersion (PackageIdentifier n v) =
  Dependency n (notThisVersion v)
notThisPackageVersion :: PackageIdentifier -> Dependency
notThisPackageVersion (PackageIdentifier n v) =
  Dependency n (notThisVersion v)
notThisPackageVersion (PackageIdentifier n v) =
  Dependency n (notThisVersion v)