Nix.Effects

Documentation

newtype StorePath

A path into the nix store

Constructors

StorePath

Fields

• unStorePath :: FilePath

class MonadFile m => MonadEffects m where

Minimal complete definition

addPath, makeAbsolutePath, findEnvPath, pathExists, importPath, getEnvVar, getCurrentSystemOS, getCurrentSystemArch, listDirectory, getSymbolicLinkStatus, derivationStrict, nixInstantiateExpr, getURL, getRecursiveSize, traceEffect, exec

Methods

addPath :: FilePath -> m StorePath

Import a path into the nix store, and return the resulting path

makeAbsolutePath :: FilePath -> m FilePath

Determine the absolute path of relative path in the current context

findEnvPath :: String -> m FilePath

pathExists :: FilePath -> m Bool

importPath :: AttrSet (NThunk m) -> FilePath -> m (NValue m)

getEnvVar :: String -> m (Maybe String)

getCurrentSystemOS :: m Text

getCurrentSystemArch :: m Text

listDirectory :: FilePath -> m [FilePath]

getSymbolicLinkStatus :: FilePath -> m FileStatus

derivationStrict :: NValue m -> m (NValue m)

nixInstantiateExpr :: String -> m (NValue m)

getURL :: Text -> m (NValue m)

getRecursiveSize :: a -> m (NValue m)

traceEffect :: String -> m ()

exec :: [String] -> m (NValue m)

Instances

(MonadFix m, MonadCatch m, MonadIO m, Alternative m, MonadPlus m, Typeable (* -> *) m) => MonadEffects (Lazy m)

Methods

addPath :: FilePath -> Lazy m StorePath

makeAbsolutePath :: FilePath -> Lazy m FilePath

findEnvPath :: String -> Lazy m FilePath

pathExists :: FilePath -> Lazy m Bool

importPath :: AttrSet (NThunk (Lazy m)) -> FilePath -> Lazy m (NValue (Lazy m))

getEnvVar :: String -> Lazy m (Maybe String)

getCurrentSystemOS :: Lazy m Text

getCurrentSystemArch :: Lazy m Text

listDirectory :: FilePath -> Lazy m [FilePath]

getSymbolicLinkStatus :: FilePath -> Lazy m FileStatus

derivationStrict :: NValue (Lazy m) -> Lazy m (NValue (Lazy m))

nixInstantiateExpr :: String -> Lazy m (NValue (Lazy m))

getURL :: Text -> Lazy m (NValue (Lazy m))

getRecursiveSize :: a -> Lazy m (NValue (Lazy m))

traceEffect :: String -> Lazy m ()

exec :: [String] -> Lazy m (NValue (Lazy m))