haskell-weeder: jailbreak to fix the build with ghc-8.10.1

pkgs/development/haskell-modules/configuration-ghc-8.10.x.nix

···
   serialise = doJailbreak super.serialise;
   setlocale = doJailbreak super.setlocale;
   shellmet = doJailbreak super.shellmet;
+  weeder = doJailbreak super.weeder;    # https://github.com/ocharles/weeder/issues/15
 
   # The shipped Setup.hs file is broken.
   csv = overrideCabal super.csv (drv: { preCompileBuildDriver = "rm Setup.hs"; });