diff --git a/pkgs/os-specific/darwin/ios-cross/default.nix b/pkgs/os-specific/darwin/ios-cross/default.nix
index 7de7d291289f..e5375ef60915 100644
--- a/pkgs/os-specific/darwin/ios-cross/default.nix
+++ b/pkgs/os-specific/darwin/ios-cross/default.nix
@@ -6,6 +6,7 @@
 , stdenv
 , coreutils
 , gnugrep
+, targetPlatform
 }:
 
 /* As of this writing, known-good prefix/arch/simulator triples:
@@ -15,7 +16,12 @@
  * x86_64-apple-darwin14  | x86_64 | true
  */
 
-{ prefix, arch, simulator ? false }: let
+let
+
+  prefix = targetPlatform.config;
+  inherit (targetPlatform) arch;
+  simulator = targetPlatform.isiPhoneSimulator or false;
+
   sdkType = if simulator then "Simulator" else "OS";
 
   sdkVer = "10.2";
diff --git a/pkgs/stdenv/cross/default.nix b/pkgs/stdenv/cross/default.nix
index e322d4655201..05910d100a87 100644
--- a/pkgs/stdenv/cross/default.nix
+++ b/pkgs/stdenv/cross/default.nix
@@ -35,11 +35,7 @@ in bootStages ++ [
     selfBuild = false;
     stdenv = if crossSystem.useiOSCross or false
       then let
-          inherit (buildPackages.darwin.ios-cross {
-              prefix = crossSystem.config;
-              inherit (crossSystem) arch;
-              simulator = crossSystem.isiPhoneSimulator or false; })
-            cc binutils;
+          inherit (buildPackages.darwin.ios-cross) cc binutils;
         in buildPackages.makeStdenvCross
           buildPackages.stdenv crossSystem
           binutils cc