diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index fccde7426c63..3ee452e4845e 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -63,7 +63,7 @@ self: super: {
 
   # The Hackage tarball is purposefully broken, because it's not intended to be, like, useful.
   # https://git-annex.branchable.com/bugs/bash_completion_file_is_missing_in_the_6.20160527_tarball_on_hackage/
-  git-annex = ((overrideCabal super.git-annex (drv: {
+  git-annex = (((overrideCabal super.git-annex (drv: {
     src = pkgs.fetchgit {
       name = "git-annex-${drv.version}-src";
       url = "git://git-annex.branchable.com/";
@@ -74,8 +74,9 @@ self: super: {
     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;
+  }).overrideScope (self: super: {
     optparse-applicative = self.optparse-applicative_0_14_0_0;
-  };
+  });
 
   # https://github.com/froozen/kademlia/issues/2
   kademlia = dontCheck super.kademlia;