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1. readTargetSelectors :: [PackageSpecifier (SourcePackage (PackageLocation a))] -> Maybe ComponentKindFilter -> [String] -> IO (Either [TargetSelectorProblem] [TargetSelector])

   cabal-install	Distribution.Client.TargetSelector

   Parse a bunch of command line args as TargetSelectors, failing with an error if any are unrecognised. The possible target selectors are based on the available packages (and their locations).

2. readTargetSelectorsWith :: (Applicative m, Monad m) => DirActions m -> [PackageSpecifier (SourcePackage (PackageLocation a))] -> Maybe ComponentKindFilter -> [String] -> m (Either [TargetSelectorProblem] [TargetSelector])

   cabal-install	Distribution.Client.TargetSelector

   No documentation available.

3. readPackageTarget :: Verbosity -> PackageTarget ResolvedPkgLoc -> IO (PackageTarget UnresolvedSourcePackage)

   cabal-install	Distribution.Client.Targets

   Given a package target that has been fetched, read the .cabal file. This only affects targets given by location, named targets are unaffected.

4. readUserConstraint :: String -> Either String UserConstraint

   cabal-install	Distribution.Client.Targets

   No documentation available.

5. readUserTarget :: String -> IO (Either UserTargetProblem UserTarget)

   cabal-install	Distribution.Client.Targets

   No documentation available.

6. readUserTargets :: Verbosity -> [String] -> IO [UserTarget]

   cabal-install	Distribution.Client.Targets

   No documentation available.

7. readMaybe :: Read a => String -> Maybe a

   cabal-install	Distribution.Client.Utils

   Parse a string using the Read instance. Succeeds if there is exactly one valid result.

   >>> readMaybe "123" :: Maybe Int
   Just 123
   

   >>> readMaybe "hello" :: Maybe Int
   Nothing
   

8. readP_to_E :: (String -> String) -> ReadP a a -> ReadE a

   cabal-install	Distribution.Deprecated.ReadP

   No documentation available.

9. readP_to_S :: ReadP a a -> ReadS a

   cabal-install	Distribution.Deprecated.ReadP

   Converts a parser into a Haskell ReadS-style function. This is the main way in which you can "run" a ReadP parser: the expanded type is readP_to_S :: ReadP a -> String -> [(a,String)]

10. readS_to_P :: ReadS a -> ReadP r a

    cabal-install	Distribution.Deprecated.ReadP

    Converts a Haskell ReadS-style function into a parser. Warning: This introduces local backtracking in the resulting parser, and therefore a possible inefficiency.

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