From 1ae9b50a772e7acf5ce61fe55a56b9f4effa73e7 Mon Sep 17 00:00:00 2001
From: Michele Guerini Rocco <rnhmjoj@users.noreply.github.com>
Date: Sun, 19 Feb 2017 02:11:08 +0100
Subject: [PATCH] vapoursynth: disable OCR by default (#22943)

---
 pkgs/development/libraries/vapoursynth/default.nix | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/pkgs/development/libraries/vapoursynth/default.nix b/pkgs/development/libraries/vapoursynth/default.nix
index 0922a5e3785..ae43307cf31 100644
--- a/pkgs/development/libraries/vapoursynth/default.nix
+++ b/pkgs/development/libraries/vapoursynth/default.nix
@@ -1,8 +1,12 @@
 { stdenv, fetchFromGitHub, pkgconfig, autoreconfHook,
-  glibc, zimg, imagemagick, libass, tesseract, yasm,
-  python3
+  glibc, zimg, imagemagick, libass, yasm, python3,
+  ocrSupport ? false, tesseract
 }:
 
+assert ocrSupport -> tesseract != null;
+
+with stdenv.lib;
+
 stdenv.mkDerivation rec {
   name = "vapoursynth-${version}";
   version = "R36";
@@ -18,14 +22,15 @@ stdenv.mkDerivation rec {
     pkgconfig autoreconfHook
     zimg imagemagick libass glibc tesseract yasm
     (python3.withPackages (ps: with ps; [ sphinx cython ]))
-  ];
+  ] ++ optional ocrSupport tesseract;
 
   configureFlags = [
     "--enable-imwri"
     "--disable-static"
+    (optionalString (!ocrSupport) "--disable-ocr")
   ];
 
-  meta = with stdenv.lib; {
+  meta = {
     description = "A video processing framework with the future in mind";
     homepage    = http://www.vapoursynth.com/;
     license     = licenses.lgpl21;