git-annex: fix build on Darwin

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

@@ -36,8 +36,12 @@ self: super: {
   # Link the proper version.
   zeromq4-haskell = super.zeromq4-haskell.override { zeromq = pkgs.zeromq4; };
 
-  # "curl" means pkgs.curl
-  git-annex = super.git-annex.override { inherit (pkgs) git rsync gnupg1 curl lsof openssh which bup perl wget; };
+  # These changes are required to support Darwin.
+  git-annex = super.git-annex.override {
+    dbus = if pkgs.stdenv.isLinux then self.dbus else null;
+    fdo-notify = if pkgs.stdenv.isLinux then self.fdo-notify else null;
+    hinotify = if pkgs.stdenv.isLinux then self.hinotify else self.fsnotify;
+  };
 
   # Depends on code distributed under a non-free license.
   bindings-yices = dontDistribute super.bindings-yices;