packageDirectory :: PackageName -> VersionNumber -> FilePath
packageDirectory packagename versionnumber = concat [
    "data/packages/",
    packagename,
    "/",
    packageIdentifier packagename versionnumber,
    "/"]
packageDirectory :: PackageName -> VersionNumber -> FilePath
packageDirectory packagename versionnumber = concat [
    "data/packages/",
    packagename,
    "/",
    packageIdentifier packagename versionnumber,
    "/"]
packageDirectory packagename versionnumber = concat [
    "data/packages/",
    packagename,
    "/",
    packageIdentifier packagename versionnumber,
    "/"]