prettyPkgInfo (PackageIdentifier (PackageName name) version) =
  name ++ "-" ++ prettyVersion version
prettyPkgInfo (PackageIdentifier (PackageName name) version) =
  name ++ "-" ++ prettyVersion version
prettyPkgInfo (PackageIdentifier (PackageName name) version) =
  name ++ "-" ++ prettyVersion version