try package:Cabal-syntax

try :: Parsing m => m a -> m a
Cabal-syntax Distribution.Compat.Parsing
Take a parser that may consume input, and on failure, go back to where we started and fail as if we didn't consume input.
tryIO :: IO a -> IO (Either IOException a)
Cabal-syntax Distribution.Compat.Exception Distribution.Compat.Prelude
Try IOException.
tryMakeRelative :: Maybe (SymbolicPath CWD (Dir dir)) -> SymbolicPath dir to -> IO (SymbolicPath dir to)
Cabal-syntax Distribution.Utils.Path
Try to make a symbolic path relative. This function does nothing if the path is already relative. NB: this function may fail to make the path relative.
dispOpenModuleSubstEntry :: (ModuleName, OpenModule) -> Doc
Cabal-syntax Distribution.Backpack
Pretty-print a single entry of a module substitution.
parsecOpenModuleSubstEntry :: CabalParsing m => m (ModuleName, OpenModule)
Cabal-syntax Distribution.Backpack
Inverse to dispModSubstEntry.