From bf98858c0fffa8b2a714faa28077d73947cacc9f Mon Sep 17 00:00:00 2001
From: Dmitry Kalinkin <dmitry.kalinkin@gmail.com>
Date: Mon, 29 Nov 2021 01:14:14 -0500
Subject: [PATCH] pythonPackages.tokenizers: fix darwin build

---
 pkgs/development/python-modules/tokenizers/default.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkgs/development/python-modules/tokenizers/default.nix b/pkgs/development/python-modules/tokenizers/default.nix
index d5d26050eeeb..55928d4fcc8e 100644
--- a/pkgs/development/python-modules/tokenizers/default.nix
+++ b/pkgs/development/python-modules/tokenizers/default.nix
@@ -1,9 +1,11 @@
 { lib
+, stdenv
 , fetchFromGitHub
 , fetchurl
 , buildPythonPackage
 , rustPlatform
 , setuptools-rust
+, libiconv
 , numpy
 , datasets
 , pytestCheckHook
@@ -72,6 +74,10 @@ in buildPythonPackage rec {
     rust.rustc
   ]);
 
+  buildInputs = lib.optionals stdenv.isDarwin [
+    libiconv
+  ];
+
   propagatedBuildInputs = [
     numpy
   ];