diff --git a/pkgs/os-specific/darwin/apple-source-releases/default.nix b/pkgs/os-specific/darwin/apple-source-releases/default.nix
index 3120d8ae3d10..f9602b50e321 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, fetchzip, pkgs, fetchurlBoot }:
+{ stdenv, buildPackages, fetchurl, fetchzip, pkgs, fetchurlBoot }:
 
 let
   # This attrset can in theory be computed automatically, but for that to work nicely we need
@@ -212,7 +212,11 @@ let
     dtrace-xcode    = applePackage "dtrace/xcode.nix"  "osx-10.11.6"     "04mi0jy8gy0w59rk9i9dqznysv6fzz1v5mq779s41cp308yi0h1c" {};
     dyld            = applePackage "dyld"              "osx-10.11.6"     "0qkjmjazm2zpgvwqizhandybr9cm3gz9pckx8rmf0py03faafc08" {};
     eap8021x        = applePackage "eap8021x"          "osx-10.11.6"     "0iw0qdib59hihyx2275rwq507bq2a06gaj8db4a8z1rkaj1frskh" {};
-    ICU             = applePackage "ICU"               "osx-10.10.5"     "1qihlp42n5g4dl0sn0f9pc0bkxy1452dxzf0vr6y5gqpshlzy03p" {};
+
+    # Splicing is currently broken in Nixpkgs
+    # cctools need to be specified manually here to handle this
+    ICU             = applePackage "ICU"               "osx-10.10.5"     "1qihlp42n5g4dl0sn0f9pc0bkxy1452dxzf0vr6y5gqpshlzy03p" { inherit (buildPackages.darwin) cctools; };
+
     IOKit           = applePackage "IOKit"             "osx-10.11.6"     "0kcbrlyxcyirvg5p95hjd9k8a01k161zg0bsfgfhkb90kh2s8x00" { inherit IOKitSrcs; };
     launchd         = applePackage "launchd"           "osx-10.9.5"      "0w30hvwqq8j5n90s3qyp0fccxflvrmmjnicjri4i1vd2g196jdgj" {};
     libauto         = applePackage "libauto"           "osx-10.9.5"      "17z27yq5d7zfkwr49r7f0vn9pxvj95884sd2k6lq6rfaz9gxqhy3" {};