src/Distribution/Nixpkgs/Haskell/FromCabal/PostProcess.hs:24:12: Warning: Redundant bracket
Found:
  (id)
Perhaps:
  id
src/Distribution/Nixpkgs/Haskell/FromCabal/PostProcess.hs:60:37: Warning: Redundant bracket
Found:
  (id)
Perhaps:
  id
2 hints

  "unliftio" = callPackage
    ({ mkDerivation, async, base, deepseq, directory, filepath, hspec
     , process, stm, time, transformers, unix, unliftio-core
     }:
     mkDerivation {
       pname = "unliftio";
       version = "0.2.7.0";
       sha256 = "0qql93lq5w7qghl454cc3s1i8v1jb4h08n82fqkw0kli4g3g9njs";
       libraryHaskellDepends = [
         async base deepseq directory filepath process stm time transformers
         unix unliftio-core
       ];
       testHaskellDepends = [
         async base deepseq directory filepath hspec process stm time
         transformers unix unliftio-core
       ];
       description = "The MonadUnliftIO typeclass for unlifting monads to IO (batteries included)";
       license = stdenv.lib.licenses.mit;
     }) {};