aggdraw cannot load font (no text renderer)

@ejeschke , are you familiar with this error? What dependency am I missing here? I was attempting to initialize EnhancedCanvasView from jupyterw on Jupyter Lab. Problem is this is a new installation of Miniconda3, so while this used to work in the old installation, it does not anymore.

2018-06-29 15:46:06,431 | E | ImageView.py:1272 (redraw_now) | Error redrawing image: cannot load font (no text renderer)
2018-06-29 15:46:06,434 | E | ImageView.py:1277 (redraw_now) | Traceback:
  File "...\ginga\ImageView.py", line 1258, in redraw_now
    self.redraw_data(whence=whence)
  File "...\ginga\ImageView.py", line 1303, in redraw_data
    self.private_canvas.draw(self)
  File "...\ginga\canvas\DrawingMixin.py", line 723, in draw
    super(DrawingMixin, self).draw(viewer)
  File "...\ginga\canvas\CompoundMixin.py", line 143, in draw
    obj.draw(viewer)
  File "...\ginga\canvas\types\basic.py", line 86, in draw
    cr.set_font_from_shape(self)
  File "...\ginga\aggw\CanvasRenderAgg.py", line 56, in set_font_from_shape
    alpha=alpha)
  File "...\ginga\aggw\AggHelp.py", line 77, in get_font
    font = get_cached_font(name, size, color, op)
  File "...\ginga\aggw\AggHelp.py", line 22, in get_cached_font
    font = agg.Font(color, info.font_path, size=fontsize, opacity=alpha)

[djhoese]

@ejeschke and @pllim I mentioned this in the related aggdraw issue, but if you have ideas for a fallback for finding freetype libraries that doesn’t include the freetype-config command, let me know. Previously aggdraw used to have a hardcoded path and after I took over the project I included the functionality from someone else for using freetype-config --prefix. It seems that freetype on conda-forge does not include this binary command so aggdraw can’t be built with it. There seems to be an issue for this (see reference above) on the freetype feedstock.

[pllim]

Pinning conda install aggdraw=1.3.5 worked. And FREETYPE_ROOT problem has disappeared. Thank you very much!