commit:     014738239a0908d3bdb47240c54bf04411cdaf31
Author:     Sergei Trofimovich <slyfox <AT> gentoo <DOT> org>
AuthorDate: Sun Jun  6 09:57:22 2021 +0000
Commit:     Sergei Trofimovich <slyfox <AT> gentoo <DOT> org>
CommitDate: Sun Jun  6 10:01:03 2021 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=01473823

dev-lang/ghc: backport sphinx quoting fix

Reported-by: Andrew Savchenko
Closes: https://bugs.gentoo.org/792558
Package-Manager: Portage-3.0.19, Repoman-3.0.3
Signed-off-by: Sergei Trofimovich <slyfox <AT> gentoo.org>

 dev-lang/ghc/files/ghc-8.10.4-sphinx-quote.patch | 27 ++++++++++++++++++++++++
 dev-lang/ghc/ghc-8.10.4.ebuild                   |  1 +
 2 files changed, 28 insertions(+)

diff --git a/dev-lang/ghc/files/ghc-8.10.4-sphinx-quote.patch 
b/dev-lang/ghc/files/ghc-8.10.4-sphinx-quote.patch
new file mode 100644
index 00000000000..e9517dbea06
--- /dev/null
+++ b/dev-lang/ghc/files/ghc-8.10.4-sphinx-quote.patch
@@ -0,0 +1,27 @@
+https://bugs.gentoo.org/792558
+
+From 83407ffc7acc00cc025b9f6ed063add9ab9f9bcc Mon Sep 17 00:00:00 2001
+From: Krzysztof Gogolewski <[email protected]>
+Date: Fri, 25 Sep 2020 02:52:19 +0200
+Subject: [PATCH] Various documentation fixes
+
+* Use r'' in conf.py. This fixes a Sphinx warning:
+  WARNING: Support for evaluating Python 2 syntax is deprecated and will be 
removed in Sphinx 4.0. Convert docs/users_guide/conf.py to Python 3 syntax.
+--- a/docs/users_guide/conf.py
++++ b/docs/users_guide/conf.py
+@@ -100,13 +100,13 @@ htmlhelp_basename = 'GHCUsersGuide'
+ latex_elements = {
+     'inputenc': '',
+     'utf8extra': '',
+-    'preamble': '''
++    'preamble': r'''
+ \usepackage{fontspec}
+ \usepackage{makeidx}
+ \setsansfont{DejaVu Sans}
+ \setromanfont{DejaVu Serif}
+ \setmonofont{DejaVu Sans Mono}
+-\setlength{\\tymin}{45pt}
++\setlength{\tymin}{45pt}
+ ''',
+ }
+ 

diff --git a/dev-lang/ghc/ghc-8.10.4.ebuild b/dev-lang/ghc/ghc-8.10.4.ebuild
index 3e4cfb0d0db..af942b11cd0 100644
--- a/dev-lang/ghc/ghc-8.10.4.ebuild
+++ b/dev-lang/ghc/ghc-8.10.4.ebuild
@@ -502,6 +502,7 @@ src_prepare() {
                eapply "${FILESDIR}"/${PN}-8.8.1-revert-CPP.patch
                eapply "${FILESDIR}"/${PN}-8.10.1-allow-cross-bootstrap.patch
                eapply "${FILESDIR}"/${PN}-8.10.3-C99-typo-ac270.patch
+               eapply "${FILESDIR}"/${PN}-8.10.4-sphinx-quote.patch
 
                # a bunch of crosscompiler patches
                # needs newer version:

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