From e74fc55c20f6cb544eacf7348f528d3d346b3ddd Mon Sep 17 00:00:00 2001
From: Nikolaus Waxweiler <nikolaus.waxweiler@daltonmaag.com>
Date: Tue, 24 Aug 2021 14:12:22 +0100
Subject: [PATCH] Opportunistically use iondrive if available

---
 Lib/fontmake/font_project.py | 7 +++++++
 setup.py                     | 1 +
 2 files changed, 8 insertions(+)

diff --git a/Lib/fontmake/font_project.py b/Lib/fontmake/font_project.py
index c34694eb..a9d1b4af 100644
--- a/Lib/fontmake/font_project.py
+++ b/Lib/fontmake/font_project.py
@@ -27,6 +27,7 @@
 import ufo2ft
 import ufo2ft.errors
 import ufoLib2
+import ufoLib2.objects
 from fontTools import designspaceLib
 from fontTools.misc.loggingTools import Timer, configLogger
 from fontTools.misc.plistlib import load as readPlist
@@ -118,6 +119,12 @@ def __init__(self, timing=False, verbose="INFO", validate_ufo=False):
 
     def open_ufo(self, path):
         try:
+            try:
+                import iondrive
+
+                return iondrive.load(ufoLib2.objects, path)
+            except ImportError:
+                pass
             return ufoLib2.Font.open(path, validate=self.validate_ufo)
         except Exception as e:
             raise FontmakeError("Reading UFO source failed", path) from e
diff --git a/setup.py b/setup.py
index 3f7e7144..ba5386ea 100644
--- a/setup.py
+++ b/setup.py
@@ -34,6 +34,7 @@
         # "lxml>=4.2.4",
     ],
     "mutatormath": ["MutatorMath>=2.1.2"],
+    "iondrive": ["iondrive>=1.0"],
 }
 # use a special 'all' key as shorthand to includes all the extra dependencies
 extras_require["all"] = sum(extras_require.values(), [])