postinst is in mpich 3.3~a2-4.
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 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 | #!/bin/sh
set -e
case "$1" in
configure)
# Continue below
;;
abort-upgrade|abort-remove|abort-deconfigure)
exit 0;
;;
*)
echo "postinst called with unknown argument \`$1'" >&2
exit 0;
;;
esac
# so, we are running with $1 = configure
# mpich2 versions before 1.2.1~rc1-1 were using two alternatives where other
# MPI implementations were using only one, which breaks. Clean up
# our mess.
if [ "$2" != "" ] && dpkg --compare-versions "$2" le "1.2.1~rc1-1"; then
update-alternatives --remove mpiexec /usr/bin/mpiexec.mpich2
fi
if update-alternatives --list mpiexec > /dev/null 2>&1; then
# OK, that case sucks. Apparently, we still have a mpiexec alternative, maybe
# from a different package (like openmpi). In that case, the only thing we
# can do is --remove-all...
update-alternatives --remove-all mpiexec
fi
update-alternatives \
--install /usr/bin/mpirun mpirun /usr/bin/mpirun.mpich 40 \
--slave /usr/share/man/man1/mpirun.1.gz mpirun.1.gz /usr/share/man/man1/mpirun.mpich.1.gz \
--slave /usr/bin/mpiexec mpiexec /usr/bin/mpiexec.mpich \
--slave /usr/share/man/man1/mpiexec.1.gz mpiexec.1.gz /usr/share/man/man1/mpiexec.mpich.1.gz
exit 0
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