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-rw-r--r--pkgs/development/ocaml-modules/eigen/default.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/development/ocaml-modules/eigen/default.nix b/pkgs/development/ocaml-modules/eigen/default.nix
index 5c75c4cb1044..0b02539d64cb 100644
--- a/pkgs/development/ocaml-modules/eigen/default.nix
+++ b/pkgs/development/ocaml-modules/eigen/default.nix
@@ -15,7 +15,7 @@ buildDunePackage rec {
 
   minimalOCamlVersion = "4.02";
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-I${lib.getDev libcxx}/include/c++/v1";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-I${lib.getDev libcxx}/include/c++/v1";
 
   propagatedBuildInputs = [ ctypes ];