cab-0.2.16: A maintenance command of Haskell cabal packages

Safe HaskellNone
LanguageHaskell2010

Distribution.Cab.VerDB

Contents

Synopsis

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.