From ef40735a819df29be7a2cdd39c4d2c2d480283fd Mon Sep 17 00:00:00 2001
From: Ned Batchelder <ned@nedbatchelder.com>
Date: Tue, 21 Mar 2023 13:30:57 -0400
Subject: build(docs): only load sphinxcontrib.spelling if we are
 spell-checking #1593

---
 doc/conf.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/doc/conf.py b/doc/conf.py
index 59907127..92eb9799 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -36,7 +36,6 @@ extensions = [
     'sphinx.ext.autodoc',
     'sphinx.ext.todo',
     'sphinx.ext.ifconfig',
-    'sphinxcontrib.spelling',
     'sphinx.ext.intersphinx',
     'sphinxcontrib.restbuilder',
     'sphinx.ext.napoleon',
@@ -220,6 +219,9 @@ htmlhelp_basename = 'coveragepydoc'
 # -- Spelling ---
 
 if any("spell" in arg for arg in sys.argv):
+    # sphinxcontrib.spelling needs the native "enchant" library, which often is
+    # missing, so only use the extension if we are specifically spell-checking.
+    extensions += ['sphinxcontrib.spelling']
     names_file = tempfile.NamedTemporaryFile(mode='w', prefix="coverage_names_", suffix=".txt")
     with open("../CONTRIBUTORS.txt") as contributors:
         names = set(re.split(r"[^\w']", contributors.read()))
-- 
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