diskimage-builder/diskimage_builder/elements/apt-preferences/extra-data.d/99-set-apt-package-pins
Ian Wienand 97c01e48ed Move elements & lib relative to diskimage_builder package
Currently we have all our elements and library files in a top-level
directory and install them into
<root>/share/diskimage-builder/[elements|lib] (where root is either /
or the root of a virtualenv).

The problem with this is that editable/development installs (pip -e)
do *not* install data_files.  Thus we have no canonical location to
look for elements -- leading to the various odd things we do such as a
whole bunch of guessing at the top of disk-image-create and having a
special test-loader in tests/test_elements.py so we can run python
unit tests on those elements that have it.

data_files is really the wrong thing to use for what are essentially
assets of the program.  data_files install works well for things like
config-files, init.d files or dropping documentation files.

By moving the elements under the diskimage_builder package, we always
know where they are relative to where we import from.  In fact,
pkg_resources has an api for this which we wrap in the new
diskimage_builder/paths.py helper [1].

We use this helper to find the correct path in the couple of places we
need to find the base-elements dir, and for the paths to import the
library shell functions.

Elements such as svc-map and pkg-map include python unit-tests, which
we do not need tests/test_elements.py to special-case load any more.
They just get found automatically by the normal subunit loader.

I have a follow-on change (I69ca3d26fede0506a6353c077c69f735c8d84d28)
to move disk-image-create to a regular python entry-point.

Unfortunately, this has to move to work with setuptools.  You'd think
a symlink under diskimage_builder/[elements|lib] would work, but it
doesn't.

[1] this API handles stuff like getting files out of .zip archive
modules, which we don't do.  Essentially for us it's returning
__file__.

Change-Id: I5e3e3c97f385b1a4ff2031a161a55b231895df5b
2016-11-01 17:27:41 -07:00

52 lines
1.6 KiB
Bash
Executable file

#!/bin/bash
#
# Copyright 2014 Hewlett-Packard Development Company, L.P.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
if [ ${DIB_DEBUG_TRACE:-0} -gt 0 ]; then
set -x
fi
set -eu
set -o pipefail
# exit directly if DIB_DPKG_MANIFEST is not defined properly
if [ -z "${DIB_DPKG_MANIFEST:-}" ]; then
echo "DIB_DPKG_MANIFEST must be set to the location of a manifest file you wish to use"
exit 0
elif [ ! -f "$DIB_DPKG_MANIFEST" -o ! -s "$DIB_DPKG_MANIFEST" ]; then
echo "$DIB_DPKG_MANIFEST is not a valid manifest file."
echo "You should assign a proper manifest file in DIB_DPKG_MANIFEST"
exit 1
fi
DIB_DPKG_MANIFEST=$(readlink -f $DIB_DPKG_MANIFEST)
# Create the preferences file from the given manifest
outfile=$(mktemp)
for package in $(jq -r ".packages[].package" $DIB_DPKG_MANIFEST); do
version=$(jq -r ".packages[] | select(.package == \"${package}\") |\
.version" $DIB_DPKG_MANIFEST)
cat << EOF >> $outfile
Package: ${package}
Pin: version ${version}
Pin-Priority: 1001
EOF
done
if [ -s $outfile ]; then
sudo mv $outfile $TMP_MOUNT_PATH/etc/apt/preferences
else
rm $outfile
fi