diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index d6a2bf6dc300..767c581d7da7 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -88,7 +88,7 @@ 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 (drv: {
+  git-annex = (overrideCabal super.git-annex (drv: {
     src = pkgs.fetchgit {
       name = "git-annex-${drv.version}-src";
       url = "git://git-annex.branchable.com/";
@@ -670,9 +670,7 @@ self: super: {
       mkdir -p $data/share/emacs
       ln -s $lispdir $data/share/emacs/site-lisp
     '';
-  })).override {
-    haskell-src-exts = self.haskell-src-exts_1_19_1;
-  };
+  }));
 
   # Make elisp files available at a location where people expect it.
   hindent = (overrideCabal super.hindent (drv: {
@@ -684,9 +682,7 @@ self: super: {
       ln -s $lispdir $data/share/emacs/site-lisp
     '';
     doCheck = false; # https://github.com/chrisdone/hindent/issues/299
-  })).override {
-    haskell-src-exts = self.haskell-src-exts_1_19_1;
-  };
+  }));
 
   # https://github.com/bos/configurator/issues/22
   configurator = dontCheck super.configurator;