qdiff: migrate to modern pager API
This results in the default pager-attend list being empty. Sadly, we
can't let the code be that way, because some legacy extensions depend
on hooking the pager's attend list at import time (and we'd like to
not break them), and if the list is actually *empty* that triggers
magic behavior in the extension that attends everything. Instead, we
put a long, improbable command name as the only entry in the attend
list.
#!/bin/sh -eu
# This function exists to set up the DOCKER variable and verify that
# it's the binary we expect. It also verifies that the docker service
# is running on the system and we can talk to it.
function checkdocker() {
if which docker.io >> /dev/null 2>&1 ; then
DOCKER=docker.io
elif which docker >> /dev/null 2>&1 ; then
DOCKER=docker
else
echo "Error: docker must be installed"
exit 1
fi
$DOCKER -h 2> /dev/null | grep -q Jansens && { echo "Error: $DOCKER is the Docking System Tray - install docker.io instead"; exit 1; }
$DOCKER version | grep -Eq "^Client( version)?:" || { echo "Error: unexpected output from \"$DOCKER version\""; exit 1; }
$DOCKER version | grep -Eq "^Server( version)?:" || { echo "Error: could not get docker server version - check it is running and your permissions"; exit 1; }
}
# Construct a container and leave its name in $CONTAINER for future use.
function initcontainer() {
[ "$1" ] || { echo "Error: platform name must be specified"; exit 1; }
DFILE="$ROOTDIR/contrib/docker/$1"
[ -f "$DFILE" ] || { echo "Error: docker file $DFILE not found"; exit 1; }
CONTAINER="hg-dockerrpm-$1"
DBUILDUSER=build
(
cat $DFILE
if [ $(uname) = "Darwin" ] ; then
# The builder is using boot2docker on OS X, so we're going to
# *guess* the uid of the user inside the VM that is actually
# running docker. This is *very likely* to fail at some point.
echo RUN useradd $DBUILDUSER -u 1000
else
echo RUN groupadd $DBUILDUSER -g `id -g` -o
echo RUN useradd $DBUILDUSER -u `id -u` -g $DBUILDUSER -o
fi
) | $DOCKER build --tag $CONTAINER -
}