From 60fc04c34b2087c67c1c826fbe354c69d9f8dd69 Mon Sep 17 00:00:00 2001
From: John Ericson <John.Ericson@Obsidian.Systems>
Date: Mon, 20 Aug 2018 17:26:42 -0400
Subject: [PATCH] haskell lib: Add appendConfigureFlags

For consistency and completeness; other helpers have these "plural"
variants too.
---
 pkgs/development/haskell-modules/lib.nix | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/haskell-modules/lib.nix b/pkgs/development/haskell-modules/lib.nix
index 8790b56e5019..54616abc4ba8 100644
--- a/pkgs/development/haskell-modules/lib.nix
+++ b/pkgs/development/haskell-modules/lib.nix
@@ -129,10 +129,12 @@ rec {
 
          > haskell.lib.appendConfigureFlag haskellPackages.servant "--profiling-detail=all-functions"
    */
-  appendConfigureFlag = drv: x: overrideCabal drv (drv: { configureFlags = (drv.configureFlags or []) ++ [x]; });
+  appendConfigureFlag = drv: x: appendConfigureFlags drv [x];
+  appendConfigureFlags = drv: xs: overrideCabal drv (drv: { configureFlags = (drv.configureFlags or []) ++ xs; });
 
   appendBuildFlag = drv: x: overrideCabal drv (drv: { buildFlags = (drv.buildFlags or []) ++ [x]; });
   appendBuildFlags = drv: xs: overrideCabal drv (drv: { buildFlags = (drv.buildFlags or []) ++ xs; });
+
   /* removeConfigureFlag drv x is a Haskell package like drv, but with
      all cabal configure arguments that are equal to x removed.