Arch Linux

Description:
After upgrading harfbuzz from version 1.3.4 to 1.4.1 the python-pillow library throws an exception:

Traceback (most recent call last):
File "<stdin>", line 3, in <module>
File "/usr/lib/python3.6/site-packages/PIL/ImageFont.py", line 238, in truetype
return FreeTypeFont(font, size, index, encoding)
File "/usr/lib/python3.6/site-packages/PIL/ImageFont.py", line 127, in __init__
self.font = core.getfont(font, size, index, encoding)
File "/usr/lib/python3.6/site-packages/PIL/ImageFont.py", line 37, in __getattr__
raise ImportError("The _imagingft C module is not installed")
ImportError: The _imagingft C module is not installed

Here's an internal error:

ImportError: /usr/lib/libharfbuzz.so.0: undefined symbol: FT_Get_Var_Blend_Coordinates


Package versions:
* Python 3.6.0-1
* python-pillow 4.0.0-2
* harfbuzz 1.4.1-1


Steps to reproduce:
1. Upgrade harfbuzz and python-pillow to latest version
2. Launch python
3. Import library: from PIL.ImageFont import truetype
4. Load truetype font (doesn't matter which one, you can just use /dev/null to see an exception): truetype(font='/dev/null')
5. Do "from PIL import _imagingft as core" to see an internal error.