From 7f249190c99c6db29b621b12f13273d7e8316523 Mon Sep 17 00:00:00 2001
From: Michael Peyton Jones <michaelpj@gmail.com>
Date: Thu, 18 Jul 2019 18:16:26 +0100
Subject: [PATCH] asciidoctor: disable epubcheck by default (#65018)

`epubcheck` pulls in Java, which can be problematic on some platforms,
and some fairly core software uses asciidoctor to build docs.
---
 pkgs/top-level/all-packages.nix | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index d388baed8f2..b828002830b 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1944,7 +1944,12 @@ in
     enableExtraPlugins = true;
   });
 
-  asciidoctor = callPackage ../tools/typesetting/asciidoctor { kindlegen = null; };
+  asciidoctor = callPackage ../tools/typesetting/asciidoctor { 
+    # kindlegen is unfree, don't enable by default
+    kindlegen = null; 
+    # epubcheck pulls in Java, which is problematic on some platforms
+    epubcheck = null;
+  };
 
   asunder = callPackage ../applications/audio/asunder { };