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#!/bin/sh
#
# Install it into a nix profile and from there build symlink chains.
# The chain will be followed to set the PYTHONPATH
# A/bin/foo -> B/bin/bar -> NIXENV/bin/.python-linkme-wrapper.sh
#
if test ! -L "$0"; then
echo "Link me!"
exit 1
fi
PROG=$(basename "$0")
SITES=
pypath() {
BIN=$(dirname "$1")
BIN=$(realpath -s "$BIN")
ENV=$(dirname "$BIN")
SITE="$ENV/lib/python2.7/site-packages"
SITES="$SITES${SITES:+:}$SITE"
PRG=$BIN/$(readlink "$1")
if test -L "$PRG"; then
pypath "$PRG"
fi
}
pypath $(realpath -s "$0")
export PYTHONPATH="$PYTHONPATH${PYTHONPATH:+:}$SITES"
exec $BIN/$PROG "$@"
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