Safe Haskell	Safe-Inferred
Language	GHC2021

Hackage.RevDeps

Description

Functions to list Hackage reverse dependencies.

Synopsis

latestReleases :: [ByteString] -> FilePath -> Maybe UTCTime -> IO (Map PackageName ByteString)
extractDependencies :: [PackageName] -> ByteString -> Map PackageName VersionRange

Documentation

latestReleases Source #

Arguments

:: [ByteString]	Needles to search in Cabal files.
-> FilePath	Path to `01-index.tar`. One can use `Cabal.Config.cfgRepoIndex` from `cabal-install-parsers` to obtain it.
-> Maybe UTCTime	Timestamp of index state at which to stop scanning.
-> IO (Map PackageName ByteString)	Map from latest releases to their Cabal files.

Scan Cabal index 01-index.tar and return Cabal files of latest releases (not necessarily largest versions), which contain one of the needles as an entire word (separated by spaces or punctuation).

To avoid ambiguity: we first select the latest releases, then filter them by needles.

extractDependencies Source #

Arguments

:: [PackageName]	Needles to search.
-> ByteString	Content of a Cabal file.
-> Map PackageName VersionRange	Needles found in the Cabal file and their version bounds.

Scan Cabal file looking for package names, coalescing version bounds from all components and under all conditions.