haskell-mikmod: fix build

pkgs/development/haskell-modules/configuration-common.nix

···
   # Nix-specific workaround
   xmonad = appendPatch super.xmonad ./xmonad-nix.patch;
 
+  # https://github.com/evanrinehart/mikmod/issues/1
+  mikmod = addExtraLibrary super.mikmod pkgs.libmikmod;
+
 } // {
 
   # Not on Hackage.

pkgs/development/haskell-modules/lib.nix

···
   addBuildTool = drv: x: addBuildTools drv [x];
   addBuildTools = drv: xs: overrideCabal drv (drv: { buildTools = (drv.buildTools or []) ++ xs; });
 
+  addExtraLibrary = drv: x: addExtraLibraries drv [x];
+  addExtraLibraries = drv: xs: overrideCabal drv (drv: { extraLibraries = (drv.extraLibraries or []) ++ xs; });
+
   addBuildDepend = drv: x: addBuildDepends drv [x];
   addBuildDepends = drv: xs: overrideCabal drv (drv: { buildDepends = (drv.buildDepends or []) ++ xs; });