System.Nix.Nar.Effects

Documentation

data NarEffects (m :: Type -> Type)

Constructors

NarEffects

Fields

• narReadFile :: FilePath -> m ByteString
• narWriteFile :: FilePath -> IsExecutable -> ByteString -> m ()
• narStreamFile :: FilePath -> IsExecutable -> m (Maybe ByteString) -> m ()
• narListDir :: FilePath -> m [FilePath]
• narCreateDir :: FilePath -> m ()
• narCreateLink :: FilePath -> FilePath -> m ()
• narIsExec :: FilePath -> m IsExecutable
• narIsDir :: FilePath -> m Bool
• narIsSymLink :: FilePath -> m Bool
• narFileSize :: FilePath -> m Int64
• narReadLink :: FilePath -> m FilePath
• narDeleteDir :: FilePath -> m ()
• narDeleteFile :: FilePath -> m ()

narEffectsIO :: (MonadIO m, MonadFail m, MonadBaseControl IO m) => NarEffects m

A particular NarEffects that uses regular POSIX for file manipulation You would replace this with your own NarEffects if you wanted a different backend

data IsExecutable

Constructors

NonExecutable

Executable

Instances

Show IsExecutable

Defined in System.Nix.Nar.Effects

Methods

showsPrec :: Int -> IsExecutable -> ShowS

show :: IsExecutable -> String

showList :: [IsExecutable] -> ShowS

Eq IsExecutable

Defined in System.Nix.Nar.Effects

Methods

(==) :: IsExecutable -> IsExecutable -> Bool

(/=) :: IsExecutable -> IsExecutable -> Bool

isExecutable :: FileStatus -> Bool

Check whether the file is executable by the owner.

Matches the logic used by Nix.

access() should not be used for this purpose on macOS. It returns false for executables when placed in certain directories. For example, when in an app bundle: App.appContentsResourcesen.lprojmyexecutable.strings

setExecutable :: FilePath -> IO ()

Set the file to be executable by the owner, group, and others.

Matches the logic used by Nix.