From 93deff3962a9c9d29ac448a0e2133e898876edce Mon Sep 17 00:00:00 2001
From: "Robert T. McGibbon" <rmcgibbo@gmail.com>
Date: Tue, 11 May 2021 11:09:25 -0400
Subject: [PATCH] mpir: fix darwin

---
 pkgs/development/libraries/mpir/default.nix | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/libraries/mpir/default.nix b/pkgs/development/libraries/mpir/default.nix
index 5e68ad80fc2e..36505b4a6670 100644
--- a/pkgs/development/libraries/mpir/default.nix
+++ b/pkgs/development/libraries/mpir/default.nix
@@ -11,7 +11,8 @@ stdenv.mkDerivation rec {
     sha256 = "1fvmhrqdjs925hzr2i8bszm50h00gwsh17p2kn2pi51zrxck9xjj";
   };
 
-  configureFlags = [ "--enable-cxx" "--enable-fat" ];
+  configureFlags = [ "--enable-cxx" ]
+    ++ lib.optionals stdenv.isLinux [ "--enable-fat" ];
 
   meta = {
     inherit version;