diff --git a/pkgs/build-support/cc-wrapper/default.nix b/pkgs/build-support/cc-wrapper/default.nix
index aca96f58ed97d..ed8d41be806a6 100644
--- a/pkgs/build-support/cc-wrapper/default.nix
+++ b/pkgs/build-support/cc-wrapper/default.nix
@@ -40,7 +40,7 @@ let
   libc_lib = if libc == null then null else getLib libc;
   cc_solib = getLib cc;
   # The wrapper scripts use 'cat' and 'grep', so we may need coreutils.
-  coreutils_bin = if nativeTools then "" else getBin coreutils;
+  coreutils_bin = if (nativeTools || targetPlatform.isWindows) then "" else getBin coreutils;
 
   default_cxx_stdlib_compile = optionalString (targetPlatform.isLinux && !(cc.isGNU or false) && !nativeTools && cc ? gcc)
     "-isystem $(echo -n ${cc.gcc}/include/c++/*) -isystem $(echo -n ${cc.gcc}/include/c++/*)/$(${cc.gcc}/bin/gcc -dumpmachine)";
diff --git a/pkgs/tools/misc/coreutils/default.nix b/pkgs/tools/misc/coreutils/default.nix
index 589c58d0acc02..69d751a629eaf 100644
--- a/pkgs/tools/misc/coreutils/default.nix
+++ b/pkgs/tools/misc/coreutils/default.nix
@@ -100,7 +100,7 @@ stdenv.mkDerivation rec {
 
     license = licenses.gpl3Plus;
 
-    platforms = platforms.all;
+    platforms = platforms.unix;
 
     maintainers = [ maintainers.eelco ];
   };