cab-0.2.15: A maintenance command of Haskell cabal packages
Distribution.Cab.VerDB
Contents
Synopsis
type PkgName = String Source
data VerDB Source
Instances
data HowToObtain Source
Constructors
getVerDB :: HowToObtain -> IO VerDB Source
toList :: VerDB -> [(PkgName, Ver)] Source
Converting VerDB to alist.
VerDB
>>> db <- getVerDB InstalledOnly >>> elem "base" . map fst . toList $ db True
>>>
db <- getVerDB InstalledOnly
elem "base" . map fst . toList $ db
toMap :: VerDB -> Map PkgName Ver Source
Converting VerDB to Map.
Map