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