GHC.PackageDb
data InstalledPackageInfo instpkgid srcpkgid srcpkgname pkgkey modulename
data ExposedModule pkgkey modulename
data OriginalModule pkgkey modulename
class BinaryStringRep a
emptyInstalledPackageInfo
readPackageDbForGhc
readPackageDbForGhcPkg
writePackageDb