preinst is in gyp 0.1~svn1729-3ubuntu1.
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 10 11 12 13 14 15 | #!/bin/sh
set -e
EGG=/usr/lib/python2.7/dist-packages/gyp-0.1.egg-info
if [ "$1" = upgrade ] && dpkg --compare-versions "$2" lt 0.1~svn1729-3ubuntu1; then
# remove symlink from the old package, it gets replaced with a directory
# in the new package but dpkg will not handle this automatically, it
# needs manual help, see https://wiki.debian.org/Teams/Dpkg/FAQ#Q:_Will_dpkg_replace_a_symlink_with_a_directory_or_vice_versa.3F
# bugreport against gyp: LP: #1246730
if [ -L $EGG ]; then
rm -f $EGG
fi
fi
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