mail-filter/spf-engine: new revision with python-3.10 support.

I've also dropped support for python-3.7, which lets us finally revert
DISTUTILS_USE_SETUPTOOLS to the default value and stop spewing QA
warnings.

Closes: https://bugs.gentoo.org/820662
Package-Manager: Portage-3.0.20, Repoman-3.0.3
Signed-off-by: Michael Orlitzky <mjo@gentoo.org>

mail-filter/spf-engine/spf-engine-2.9.2-r4.ebuild

@@ -0,0 +1,77 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_8 python3_9 python3_10 )
+
+# The built-in ipaddress module handles the parsing of IP addresses. If
+# python is built without ipv6 support, then ipaddress can't parse ipv6
+# addresses, and the daemon will crash if it sees an ipv6 SPF record. In
+# other words, it's completely broken.
+PYTHON_REQ_USE="ipv6(+)"
+
+inherit distutils-r1
+
+DESCRIPTION="Policy daemon and milter for Postfix SPF verification"
+HOMEPAGE="https://launchpad.net/spf-engine"
+SRC_URI="mirror://pypi/${PN:0:1}/${PN}/${P}.tar.gz"
+
+LICENSE="Apache-2.0"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE=""
+
+DEPEND="dev-python/pyspf[${PYTHON_USEDEP}]"
+
+RDEPEND="${DEPEND}
+	dev-python/authres[${PYTHON_USEDEP}]"
+
+DOCS=( CHANGES policyd-spf.conf.commented README README.per_user_whitelisting )
+
+python_prepare_all() {
+	# The "real" config file mentions the commented one, so we point
+	# users in the right direction.
+	local oldconf="policyd-spf.conf.commented"
+	local newconf="/usr/share/doc/${PF}/${oldconf}"
+
+	sed -e "1 s~ ${oldconf}~,\n#  ${newconf}~" -i policyd-spf.conf \
+		|| die 'failed to update commented config file path'
+
+	distutils-r1_python_prepare_all
+}
+
+src_install() {
+	distutils-r1_src_install
+
+	# Remove the milter files that are installed by default. The milter
+	# isn't quite ready:
+	#
+	#   * The README says it's experimental not well-tested.
+	#   * There's no documentation for its configuration parameters
+	#     (expecially the UserID).
+	#   * The configuration file is hard-coded to /usr/local.
+	#   * The paths in the systemd service file are hard-coded to /usr/local.
+	#   * We need to write an OpenRC service script for it.
+	#
+	# These are all eventually doable, but I'm not willing to commit to
+	# making the milter work before upstream is.
+	#
+	rm "${ED}/usr/bin/pyspf-milter" \
+		|| die "failed to remove ${ED}/usr/bin/pyspf-milter"
+	rm -r "${ED}/usr/lib/systemd" \
+		|| die "failed to remove ${ED}/usr/lib/systemd"
+	rm -r "${ED}/usr/etc/init.d" \
+		|| die "failed to remove ${ED}/usr/etc/init.d"
+	einfo "The milter component of spf-engine is still deemed experimental"
+	einfo "and not well-tested by upstream. It's missing configuration"
+	einfo "files, service scripts, and documentation. In other words, it"
+	einfo "doesn't work yet."
+
+	# The setuptools installation routing always works relative to
+	# python's prefix, so that when installing locally you wind up
+	# with paths like /usr/local/etc. However for system installs
+	# that does the wrong thing and puts the sysconfdir at /usr/etc.
+	# Here we move it to the right place.
+	mv -v "${ED}/usr/etc" "${ED}/" || die 'failed to relocate sysconfdir'
+}