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-rw-r--r--pkgs/top-level/all-packages.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index e400a55e9f49..c5823a58a626 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -2963,7 +2963,7 @@ let
   gmm = callPackage ../development/libraries/gmm { };
 
   gmp =
-    if false then # XXX: stdenv.system == "i686-darwin" then
+    if stdenv.system == "i686-darwin" then
       # GMP 4.3.2 is broken on Darwin, so use 4.3.1.
       makeOverridable (import ../development/libraries/gmp/4.3.1.nix) {
         inherit stdenv fetchurl m4;