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As xasy is written in the interactive scripting language
Python/Qt, it requires Python (https://www.python.org),
along with the Python packages pyqt5, cson, and
numpy:
pip3 install cson numpy pyqt5 PyQt5.sip
Pictures are deconstructed into the SVG image format.
Since Qt5 does not support SVG clipping, you will need
the rsvg-convert utility, which is part of the
librsvg2-tools package on UNIX systems
and the librsvg package on MacOS X; under
Microsoft Windows, it is available as
https://sourceforge.net/projects/tumagcc/files/rsvg-convert-2.40.20.7z
Deconstruction of a picture into its components is fastest when using
the LaTeX TeX engine. One can speed up deconstruction for
other TeX engines using the 2.13.1 version or later of dvisvgm
and setting dvisvgmMultipleFiles=true; in the Asymptote configuration file (see configuration file).