Importify.Path

This module contains common utilities for working with importify cache.

Predefined directories

importifyDir :: FilePath

importifyPath :: Path Rel Dir

extensionsFile :: FilePath

extensionsPath :: Path Rel File

Path to JSON-encoded Map from target to its list of default extensions.

modulesFile :: FilePath

modulesPath :: Path Rel File

Path to file that stores mapping from module names to their packages.

symbolsDir :: FilePath

symbolsPath :: Path Rel Dir

testDataPath :: Path Rel Dir

Path to golden tests.

Utility functions to work with files and directories

decodeFileOrMempty

Arguments

:: (FromJSON t, Monoid m, MonadIO f)

=> Path b File

Path to json data

-> (t -> f m)

Action from decoded value

-> f m

Tries to read file and then decode it. If either of two phases fails then mempty returned and warning is printed to console.

doInsideDir :: (MonadIO m, MonadMask m) => Path Abs Dir -> m a -> m a

Create given directory and perform given action inside it.

findCabalFile :: MonadIO m => Path Abs Dir -> m $ (Maybe $ Path Abs File)

Returns relative path to cabal file under given directory.

lookupToRoot :: (Path Abs Dir -> IO Bool) -> Path Rel File -> IO (Maybe (Path Abs Dir, Path Rel File))

Walk up till root while unpure predicate is False. Returns absolute path to directory where predicate is True and suffix of current directory prepended to given file.