From dd02bd704c186b0f4ab0a395986d753b3a6e2432 Mon Sep 17 00:00:00 2001
From: NFSL2001 <33471049+NightFurySL2001@users.noreply.github.com>
Date: Wed, 26 Jul 2023 19:59:36 +0800
Subject: [PATCH 1/2] Update opentype.py

---
 Lib/extractor/formats/opentype.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Lib/extractor/formats/opentype.py b/Lib/extractor/formats/opentype.py
index 46dd501..70c49e9 100644
--- a/Lib/extractor/formats/opentype.py
+++ b/Lib/extractor/formats/opentype.py
@@ -11,7 +11,6 @@
 from extractor.exceptions import ExtractorError
 from extractor.stream import InstructionStream
 from extractor.tools import RelaxedInfo, copyAttr
-from fontFeatures.ttLib import unparse
 
 
 TRUETYPE_INSTRUCTIONS_KEY = "public.truetype.instructions"
@@ -1067,6 +1066,7 @@ def _extractOpenTypeKerningFromKern(source):
 
 
 def extractOpenTypeFeatures(source):
+    from fontFeatures.ttLib import unparse
     return unparse(source).asFea()
 
 

From 810278b768c54c1cbab09fc6873eb6c056fd92b0 Mon Sep 17 00:00:00 2001
From: Ben Kiel <ben@benkiel.com>
Date: Fri, 1 Dec 2023 11:20:11 -0600
Subject: [PATCH 2/2] Changes based on feedback

@typemytype changed this to do the try/except only if features are asked for, no need to do it if they aren't
---
 Lib/extractor/formats/opentype.py | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/Lib/extractor/formats/opentype.py b/Lib/extractor/formats/opentype.py
index 70c49e9..8b24782 100644
--- a/Lib/extractor/formats/opentype.py
+++ b/Lib/extractor/formats/opentype.py
@@ -1066,7 +1066,12 @@ def _extractOpenTypeKerningFromKern(source):
 
 
 def extractOpenTypeFeatures(source):
-    from fontFeatures.ttLib import unparse
-    return unparse(source).asFea()
-
-
+    try:
+        from fontFeatures.ttLib import unparse
+        _haveFontFeatures = True
+    except ImportError:
+        _haveFontFeatures = False
+
+    if _haveFontFeatures:
+        return unparse(source).asFea()
+    return ""