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# -*- fill-column: 75 -*-
. ${BUILDFILE%/*}/common.sh
pkgver=20180918
package() {
preamble
pkgdesc="Parabola server configuration: Make Mailman 2 play nice with configuration management"
# #### mailman
depends=(mailman)
# The packager of the Mailman 2 package did a poor job, because they put
# the main configuration file in /usr/lib/ instead of /etc/. They at least
# put in a /etc/mailman/mm_cfg.py → /usr/lib/mailman/Mailman/mm_cfg.py
# symlink so that at least you can find the file if you go looking around
# in /etc/.
#
# However, that symlink it doesn't do anything for you if you'd like to be
# able to back up your system configuration by backing up /etc/, or if you
# track your system configuration by watching /etc/ (like with etckeeper),
# or a number of other things that sysadmins like to do...
#
# The tidy solution would be to swap which path is the real file, and which
# path is the symlink, but pacman would then discard our config when it
# upgrades the mailman package. So instead, we need to make up a totally
# new path for the real file... like `/etc/mailman/mm_cfg.real.py`. We
# replace the file in /usr/ with a symlink to that.
#
# To make this all go smoothly, we do it with some slightly clever Holo
# tricks.
# When the default /usr/…/mm_cfg.py changes, save the new default version
# as a .pacnew file in /etc
add-file -m755 usr/share/holo/files/01-"$pkgname"/usr/lib/mailman/Mailman/mm_cfg.py <<-'EOF'
#!/bin/sh
tee etc/mailman/mm_cfg.real.py.pacnew
EOF
# then replace /usr/…/mm_cfg.py with a symlink to /etc/…/mm_cfg.real.py
install -d usr/share/holo/files/02-"$pkgname"/usr/lib/mailman/Mailman
ln -sT /etc/mailman/mm_cfg.real.py usr/share/holo/files/02-"$pkgname"/usr/lib/mailman/Mailman/mm_cfg.py
# and initialize /etc/…/mm_cfg.real.py with the contents of the default
# mm_cfg.py
add-file etc/mailman/mm_cfg.real.py <<<''
add-file -m755 usr/share/holo/files/03-"$pkgname"/etc/mailman/mm_cfg.real.py.holoscript <<-'EOF'
#!/bin/sh
cat /usr/lib/mailman/Mailman/mm_cfg.py.dist
EOF
postamble
}
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