Distribution.Cab.VerDB

Types

type PkgName = String

data VerDB

Instances

Eq VerDB

Methods

(==) :: VerDB -> VerDB -> Bool

(/=) :: VerDB -> VerDB -> Bool

Show VerDB

Methods

showsPrec :: Int -> VerDB -> ShowS

show :: VerDB -> String

showList :: [VerDB] -> ShowS

data HowToObtain

Constructors

InstalledOnly

AllRegistered

Creating

getVerDB :: HowToObtain -> IO VerDB

Converting

toList :: VerDB -> [(PkgName, Ver)]

Converting VerDB to alist.

>>> db <- getVerDB InstalledOnly
>>> elem "base" . map fst . toList $ db
True

toMap :: VerDB -> Map PkgName Ver

Converting VerDB to Map.