asymptote: GUI installation

 
 11.1 GUI installation
 =====================
 
 As 'xasy' is written in the interactive scripting language 'Python/TK',
 it requires 'Python' (<http://www.python.org>), the 'Pillow' fork of the
 'Python Imaging Library',and the 'tkinter' package (included with
 'Python' under 'Microsoft Windows').  'Fedora Linux' users can either
 install 'tkinter' and 'Pillow' with the commands
 dnf install tkinter
 dnf install tk-devel
 dnf install python-pillow-tk
 or manually install the 'tkinter', 'tix', 'tk', and 'tk-devel' packages.
 
    Pictures are deconstructed into the PNG image format, which supports
 full alpha channel transparency.  Under 'Microsoft Windows', this
 requires 'Python 2.7.4' or later and version '3.1.0' of the 'Pillow'
 fork of the 'Python Imaging Library', available from
      <http://pypi.python.org/pypi/Pillow>