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interfaces: make the `peer` mixin not a Protocol to fix Python 3.10 failures...
interfaces: make the `peer` mixin not a Protocol to fix Python 3.10 failures I can't find any documentation on this, but it appears that Protocol class attributes don't get inherited in subclasses that explicitly subclass a Protocol until Python 3.11, which caused a ton of failures in CI on macOS and Windows (which both test using Python 3.9). The problem started with 1df97507c6b8, and typically manifested as most tests failing to access `ui` on various `peer` classes. Here's a short proof of concept: from __future__ import annotations from typing import ( Protocol, ) class peer(Protocol): limitedarguments: bool = False def __init__(self, arg1, arg2, remotehidden: bool = False) -> None: self.arg1 = arg1 self.arg2 = arg2 class subclass(peer): def __init__(self, arg1, arg2): super(subclass, self).__init__(arg1, arg2, False) sub = subclass(1, 2) print("sub.arg1 is %r" % sub.arg1) When run with Python 3.8.10, 3.9.13, and 3.10.11, the result is: $ py -3.8 prot-test.py Traceback (most recent call last): File "prot-test.py", line 20, in <module> print("sub.arg1 is %r" % sub.arg1) AttributeError: 'subclass' object has no attribute 'arg1' On Python 3.11.9, 3.12.7, and 3.13.0, the result is: $ py -3.11 ../prot-test.py sub.arg1 is 1 Explicitly adding annotations to `peer` like `limitedarguments` didn't help.

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builddeb
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#!/bin/sh -e
#
# Build a Mercurial debian package from the current repo
#
# Tested on Jessie (stable as of original script authoring.)
. $(dirname $0)/packagelib.sh
ROOTDIR=$(cd $(dirname $0)/../.. > /dev/null; pwd)
BUILD=1
CLEANUP=1
DISTID=`(lsb_release -is 2> /dev/null | tr '[:upper:]' '[:lower:]') || echo debian`
CODENAME=`lsb_release -cs 2> /dev/null || echo unknown`
DEBFLAGS=-b
cleanup() {
if [ "$CLEANUP" ]; then
rm -r "$ROOTDIR/debian";
fi
}
while [ "$1" ]; do
case "$1" in
--distid )
shift
DISTID="$1"
shift
;;
--codename )
shift
CODENAME="$1"
shift
;;
--cleanup )
shift
BUILD=
;;
--build )
shift
CLEANUP=
;;
--source-only )
shift
DEBFLAGS=-S
;;
* )
echo "Invalid parameter $1!" 1>&2
exit 1
;;
esac
done
cd "$ROOTDIR"
trap 'cleanup' EXIT
set -u
if [ ! -d .hg ]; then
printf "You are inside %s, which is not the root of a Mercurial repository\n" $(pwd) 1>&2
exit 1
fi
gethgversion
debver="$version"
if [ -n "$type" ] ; then
debver="$debver~$type"
fi
if [ -n "$distance" ] ; then
debver="$debver+$distance-$CODENAME-$node"
elif [ "$DEBFLAGS" = "-S" ] ; then
# for building a ppa (--source-only) for a release (distance == 0), we need
# to version the distroseries so that we can upload to launchpad
debver="$debver~${CODENAME}1"
fi
control=debian/control
changelog=debian/changelog
if [ "$BUILD" ]; then
if [ -d debian ] ; then
printf "Error! debian control directory already exists at %s/debian\n" $(pwd)
exit 1
fi
cp -r "$ROOTDIR"/contrib/packaging/debian debian
sed -i.tmp "s/__VERSION__/$debver/" $changelog
sed -i.tmp "s/__DATE__/$(date --rfc-2822)/" $changelog
sed -i.tmp "s/__CODENAME__/$CODENAME/" $changelog
rm $changelog.tmp
# remove the node from the version string
SRCFILE="mercurial_$(echo $debver | sed "s,-$node,,").orig.tar.gz"
"$ROOTDIR/hg" archive $SRCFILE
mv $SRCFILE ..
debuild -us -uc -i -I $DEBFLAGS
if [ $? != 0 ]; then
echo 'debuild failed!'
exit 1
fi
fi
if [ "$CLEANUP" ] ; then
echo
OUTPUTDIR=${OUTPUTDIR:=packages/$DISTID-$CODENAME}
mkdir -p "$OUTPUTDIR"
find ../mercurial*.deb ../mercurial_*.build* ../mercurial_*.changes \
../mercurial*.dsc ../mercurial*.gz \
-type f -newer $control -print0 2>/dev/null | \
xargs -Inarf -0 mv narf "$OUTPUTDIR"
echo "Built packages for $debver:"
find "$OUTPUTDIR" -type f -newer $control -name '*.deb'
fi