From 5c8356105c6bea5869bb3cd989843281f318d27e Mon Sep 17 00:00:00 2001
From: Nikolay Korotkiy <sikmir@gmail.com>
Date: Sun, 9 Feb 2020 01:12:17 +0300
Subject: [PATCH] opencc: enable on darwin

---
 pkgs/tools/text/opencc/default.nix | 30 ++++++++++++++++++------------
 1 file changed, 18 insertions(+), 12 deletions(-)

diff --git a/pkgs/tools/text/opencc/default.nix b/pkgs/tools/text/opencc/default.nix
index 8b6ada09ebe..07990aca92a 100644
--- a/pkgs/tools/text/opencc/default.nix
+++ b/pkgs/tools/text/opencc/default.nix
@@ -1,24 +1,30 @@
-{ stdenv, fetchurl, cmake, python }:
+{ stdenv, fetchFromGitHub, cmake, python }:
 
-stdenv.mkDerivation {
-  name = "opencc-1.0.5";
-  src = fetchurl {
-    url = "https://github.com/BYVoid/OpenCC/archive/ver.1.0.5.tar.gz";
-    sha256 = "1ce1649ba280cfc88bb76e740be5f54b29a9c034400c97a3ae211c37d7030705";
+stdenv.mkDerivation rec {
+  pname = "opencc";
+  version = "1.0.5";
+
+  src = fetchFromGitHub {
+    owner = "BYVoid";
+    repo = "OpenCC";
+    rev = "ver.${version}";
+    sha256 = "1pv5md225qwhbn8ql932zdg6gh1qlx3paiajaks8gfsa07yzvhr4";
   };
 
-  buildInputs = [ cmake python ];
+  nativeBuildInputs = [ cmake python ];
 
-  preBuild = ''
-    # let intermediate tools find intermediate library
+  # let intermediate tools find intermediate library
+  preBuild = stdenv.lib.optionalString stdenv.isLinux ''
     export LD_LIBRARY_PATH=$LD_LIBRARY_PATH''${LD_LIBRARY_PATH:+:}$(pwd)/src
+  '' + stdenv.lib.optionalString stdenv.isDarwin ''
+    export DYLD_LIBRARY_PATH=$DYLD_LIBRARY_PATH''${DYLD_LIBRARY_PATH:+:}$(pwd)/src
   '';
 
   # Parallel building occasionaly fails with: Error copying file "/tmp/nix-build-opencc-1.0.5.drv-0/OpenCC-ver.1.0.5/build/src/libopencc.so.1.0.0" to "/tmp/nix-build-opencc-1.0.5.drv-0/OpenCC-ver.1.0.5/build/src/tools".
   enableParallelBuilding = false;
 
   meta = with stdenv.lib; {
-    homepage = https://github.com/BYVoid/OpenCC;
+    homepage = "https://github.com/BYVoid/OpenCC";
     license = licenses.asl20;
     description = "A project for conversion between Traditional and Simplified Chinese";
     longDescription = ''
@@ -27,7 +33,7 @@ stdenv.mkDerivation {
       phrase-level conversion, variant conversion and regional idioms among Mainland China,
       Taiwan and Hong kong.
     '';
-    maintainers = [ maintainers.sifmelcara ];
-    platforms = platforms.linux;
+    maintainers = with maintainers; [ sifmelcara ];
+    platforms = with platforms; linux ++ darwin;
   };
 }