add upstream fix for sphinx-1.8

ghc-sphinx-1.8-4eebc8016.patch

@@ -0,0 +1,46 @@
+commit 4eebc8016f68719e1ccdf460754a97d1f4d6ef05
+Author: Ben Gamari <ben@smart-cactus.org>
+Date:   Thu Sep 20 08:27:37 2018 -0400
+
+    users-guide: Fix build with sphinx 1.8
+    
+    It seems that both add_object_type and add_directive_to_domain both register a
+    directive. Previously sphinx didn't seem to mind this but as of Sphinx 1.8 it
+    crashes with an exception.
+
+diff --git a/docs/users_guide/flags.py b/docs/users_guide/flags.py
+index a70f7fef1e..284b5e06cc 100644
+--- a/docs/users_guide/flags.py
++++ b/docs/users_guide/flags.py
+@@ -48,6 +48,8 @@ from docutils import nodes
+ from docutils.parsers.rst import Directive, directives
+ from sphinx import addnodes
+ from sphinx.domains.std import GenericObject
++from sphinx.domains import ObjType
++from sphinx.roles import XRefRole
+ from sphinx.errors import SphinxError
+ from utils import build_table_from_list
+ 
+@@ -599,14 +601,20 @@ def purge_flags(app, env, docname):
+ ### Initialization
+ 
+ def setup(app):
++    # Yuck: We can't use app.add_object_type since we need to provide the
++    # Directive instance ourselves.
++    std_object_types = app.registry.domain_object_types.setdefault('std', {})
+ 
+     # Add ghc-flag directive, and override the class with our own
+-    app.add_object_type('ghc-flag', 'ghc-flag')
+     app.add_directive_to_domain('std', 'ghc-flag', Flag)
++    app.add_role_to_domain('std', 'ghc-flag', XRefRole())
++    std_object_types['ghc-flag'] = ObjType('ghc-flag', 'ghc-flag')
+ 
+     # Add extension directive, and override the class with our own
+-    app.add_object_type('extension', 'extension')
+     app.add_directive_to_domain('std', 'extension', LanguageExtension)
++    app.add_role_to_domain('std', 'extension', XRefRole())
++    std_object_types['extension'] = ObjType('ghc-flag', 'ghc-flag')
++
+     # NB: language-extension would be misinterpreted by sphinx, and produce
+     # lang="extensions" XML attributes
+ 

ghc.spec

@@ -58,7 +58,10 @@ Patch1:  ghc-gen_contents_index-haddock-path.patch
 Patch2:  ghc-Cabal-install-PATH-warning.patch
 # https://github.com/ghc/ghc/pull/143
 Patch5:  ghc-configure-fix-sphinx-version-check.patch
+# https://phabricator.haskell.org/rGHC4eebc8016f68719e1ccdf460754a97d1f4d6ef05
+Patch6: ghc-sphinx-1.8-4eebc8016.patch
 
+# Arch dependent packages
 Patch12: ghc-armv7-VFPv3D16--NEON.patch
 
 # for s390x
@@ -276,6 +279,7 @@ except the ghc library, which is installed by the toplevel ghc metapackage.
 
 %patch2 -p1 -b .orig
 %patch5 -p1 -b .orig
+%patch6 -p1 -b .orig
 
 %if 0%{?fedora} || 0%{?rhel} > 6
 rm -r libffi-tarballs
@@ -659,6 +663,7 @@ fi
 - new patches:
   - 6e361d895dda4600a85e01c72ff219474b5c7190.patch
   - fix-build-using-unregisterized-v8.2.patch
+  - ghc-sphinx-1.8-4eebc8016.patch
 - dropped patch:
   - D4159.patch
   - ghc-7.8-arm7_saner-linker-opt-handling-9873.patch