Changed the library component's library dependency on 'Cabal' from

>=0

<2.2

Changed description from

This module provides simple access to the Hackage database by means
of @Data.Map@. Suppose you wanted to implement a utility that queries
the set of available versions for a given package, the following
program would do the trick:

> import qualified Distribution.Hackage.DB as DB
> import Distribution.Text ( display )
> import System.Environment ( getArgs )
>
> main :: IO ()
> main = do
>   pkgs <- getArgs
>   db <- DB.readHackage
>   let getVersions name = maybe [] DB.keys (DB.lookup name db)
>   mapM_ (putStrLn . unwords . map display . getVersions) pkgs

When run, it would produce the following output:

> ./a.out containers deepseq cabal-install
> 0.1.0.0 0.1.0.1 0.2.0.0 0.2.0.1 0.3.0.0 0.4.0.0
> 1.0.0.0 1.1.0.0 1.1.0.1 1.1.0.2
> 0.4.0 0.5.0 0.5.1 0.5.2 0.6.0 0.6.2 0.6.4 0.8.0 0.8.2 0.10.0 0.10.2

Note that once the database has been parsed, it can be accessed
quickly, but the inital cost of reading @00-index.tar@ is fairly
high.

This package is known to work on Linux and Mac OS X, but it's
probably not going to work on Windows (because no-one tested it, as
far as I know).

This module provides simple access to the Hackage database by means
of @Data.Map@. Suppose you wanted to implement a utility that queries
the set of available versions for a given package, the following
program would do the trick:

> import qualified Distribution.Hackage.DB as DB
> import Distribution.Text ( display )
> import System.Environment ( getArgs )
>
> main :: IO ()
> main = do
>   pkgs <- getArgs
>   db <- DB.readHackage
>   let getVersions name = maybe [] DB.keys (DB.lookup name db)
>   mapM_ (putStrLn . unwords . map display . getVersions) pkgs

When run, it would produce the following output:

> ./a.out containers deepseq cabal-install
> 0.1.0.0 0.1.0.1 0.2.0.0 0.2.0.1 0.3.0.0 0.4.0.0
> 1.0.0.0 1.1.0.0 1.1.0.1 1.1.0.2
> 0.4.0 0.5.0 0.5.1 0.5.2 0.6.0 0.6.2 0.6.4 0.8.0 0.8.2 0.10.0 0.10.2