Distribution.Hackage.DB.Parsed

This module provides simple access to the Hackage database by means of Map.

Documentation

type Hackage = Map String (Map Version GenericPackageDescription)

A Map representation of the Hackage database. Every package name maps to a non-empty set of version, and for every version there is a parsed Cabal file.

readHackage :: IO Hackage

Read the Hackage database from the location determined by hackagePath and return a Map that provides fast access to its contents.

readHackage' :: FilePath -> IO Hackage

Read the Hackage database from the given FilePath and return a Hackage map that provides fast access to its contents.

parseHackage :: ByteString -> Hackage

Parse the contents of Hackage's 00-index.tar into a Hackage map.

parseUnparsedHackage :: Hackage -> Hackage

Convert an Hackage map into a parsed Hackage map.

parsePackage :: String -> Version -> ByteString -> GenericPackageDescription

Convenience wrapper around parsePackage' to parse a single Cabal file. Failure is reported with error.

parsePackage' :: ByteString -> Either String GenericPackageDescription

Parse a single Cabal file.