contrib/packaging/dockerdeb

merge: respect parents order when using `graft` on a merge

The previous code did not record the index of the replaced parent. It was always
using the "graft" destination as `p1`. This could switch parents order in some
situation (eg: some of the evolve evolving merge case). Recording and using the
information fixes the issue in evolve.

We are not aware of core commands calling graft in that fashion, so we could not
build a simple test case for it using core commands.

#!/bin/bash -eu

. $(dirname $0)/packagelib.sh

BUILDDIR=$(dirname $0)
export ROOTDIR=$(cd $BUILDDIR/../.. > /dev/null; pwd)

DISTID="$1"
CODENAME="$2"
PLATFORM="$1-$2"
shift; shift # extra params are passed to build process

OUTPUTDIR=${OUTPUTDIR:=$ROOTDIR/packages/$PLATFORM}
CONTAINER=hg-docker-$PLATFORM

DOCKER=$($BUILDDIR/hg-docker docker-path)

$BUILDDIR/hg-docker build \
    --build-arg CODENAME=$CODENAME \
    $BUILDDIR/docker/$DISTID.template \
    $CONTAINER

# debuild only appears to be able to save built debs etc to .., so we
# have to share the .. of the current directory with the docker
# container and hope it's writable. Whee.
dn=$(basename $ROOTDIR)

DBUILDUSER=build

if [ $(uname) = "Darwin" ] ; then
    $DOCKER run -u $DBUILDUSER --rm -v $PWD/..:/mnt $CONTAINER \
            sh -c "cd /mnt/$dn && make clean && make local"
fi
$DOCKER run -u $DBUILDUSER --rm -v $ROOTDIR/..:/mnt $CONTAINER \
  sh -c "cd /mnt/$dn && DEB_BUILD_OPTIONS='${DEB_BUILD_OPTIONS:=}' contrib/packaging/builddeb --build --distid $DISTID --codename $CODENAME $@"
(cd $ROOTDIR && contrib/packaging/builddeb --cleanup --distid $DISTID --codename $CODENAME)
if [ $(uname) = "Darwin" ] ; then
    $DOCKER run -u $DBUILDUSER --rm -v $PWD/..:/mnt $CONTAINER \
            sh -c "cd /mnt/$dn && make clean"
fi