preinst is in python-spyderlib 2.3.8+dfsg1-1build1.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 | #!/bin/sh
set -e
if [ "$1" = "upgrade" ] && dpkg --compare-versions "$2" lt-nl 2.1.0-1; then
if [ -L /usr/share/doc/python-spyderlib/html ]; then
rm -f /usr/share/doc/python-spyderlib/html
fi
fi
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