#9623: Use Data.List.dropWhileEnd -------------------------------------+------------------------------------- Reporter: dfeuer | Owner: Type: task | Status: new Priority: normal | Milestone: 7.10.1 Component: libraries | Version: 7.8.3 (other) | Keywords: Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Easy (less than 1 Unknown/Multiple | hour) Type of failure: | Blocked By: None/Unknown | Related Tickets: Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Changes (by thomie): * status: patch => new * component: Compiler => libraries (other) Comment: So `dropWhileEnd` was not added to base until version 4.5 (ghc 7.4), so to allow compilation with older versions of ghc, it would have to be conditionally imported and defined in the files you changed: {{{#!haskell #if MIN_VERSION_base(4,5,0) import Data.List(dropWhileEnd) #endif }}} {{{#!haskell #if !MIN_VERSION_base(4,5,0) dropWhileEnd :: (a -> Bool) -> [a] -> [a] dropWhileEnd p = foldr (\x xs -> if p x && null xs then [] else x : xs) [] #endif }}} And most of these patches should go to Github, since that is where those projects are maintained: [http://github.com/haskell/cabal cabal], [http://github.com/haskell/filepath filepath], [http://github.com/haskell/haddock haddock] and [http://github.com/judah/haskeline haskeline]. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9623#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler