wip: build xwayland as patched Debian package

reform2-imx8mq/mkrepo.sh

+#!/bin/sh
+# SPDX-License-Identifier: MIT
+#
+# Copyright 2021 Helmut Grohne & Johannes Schauer Marin Rodrigues
+
+set -e
+set -u
+
+BASESUITE=unstable
+OURSUITE=reform
+WORKDIR=$(mktemp -d)
+PATCHDIR=$(realpath patches)
+REPREPRO_BASE_DIR=$(realpath repo)
+HTTP_PORT=7251
+: "${MIRROR:=http://deb.debian.org/debian}"
+SOURCE_DATE_EPOCH=$(date +%s)
+export SOURCE_DATE_EPOCH
+export REPREPRO_BASE_DIR
+HTTPD_PID=
+
+export DEBEMAIL='robot <reform@reform.repo>'
+
+cleanup() {
+	if test -n "$HTTPD_PID"; then
+		kill "$HTTPD_PID"
+	fi
+	if test -d "$WORKDIR"; then
+		rm -Rf "$WORKDIR"
+	fi
+}
+
+trap cleanup EXIT
+
+python3 -m http.server --bind 127.0.0.1 --directory "$REPREPRO_BASE_DIR" "$HTTP_PORT" &
+HTTPD_PID=$!
+
+SRC_LIST_PATCHED="deb [ trusted=yes ] http://127.0.0.1:$HTTP_PORT/ $OURSUITE main"
+
+BUILD_ARCH=$(dpkg --print-architecture)
+HOST_ARCH=arm64
+
+if ! test -d "$REPREPRO_BASE_DIR"; then
+	mkdir -p "$REPREPRO_BASE_DIR/conf"
+	cat > "$REPREPRO_BASE_DIR/conf/distributions" <<EOF
+Codename: $OURSUITE
+Label: $OURSUITE
+Architectures: $HOST_ARCH $(test "$BUILD_ARCH" = "$HOST_ARCH" || echo "$BUILD_ARCH")
+Components: main
+UDebComponents: main
+Description: updated packages for mnt reform
+EOF
+	cat > "$REPREPRO_BASE_DIR/conf/options" <<EOF
+verbose
+ignore wrongdistribution
+EOF
+	reprepro export
+fi
+
+chdistdata=$(pwd)/chdist
+chdist_base() {
+	local cmd
+	cmd=$1
+	shift
+	chdist "--data-dir=$chdistdata" "$cmd" base "$@"
+}
+
+if [ ! -d "$chdistdata" ]; then
+	chdist_base create
+fi
+
+cat << END > "$chdistdata/base/etc/apt/sources.list"
+deb-src $MIRROR $BASESUITE main
+END
+chdist_base apt-get update
+
+BUILD_CHROOT=$(realpath build-chroot.tar)
+if [ ! -e "$BUILD_CHROOT" ] || [ $(stat --format=%Y $BUILD_CHROOT) -le $(date --date=yesterday +%s) ]; then
+	mmdebstrap --variant=buildd unstable "$BUILD_CHROOT"
+fi
+
+for p in patches/*; do
+	p=${p#patches/}
+
+	if [ ! -e "patches/$p" ]; then
+		echo "patches/$p doesn't exist"
+		continue
+	fi
+
+	if [ ! -x "patches/$p" ]; then
+		echo "patches/$p is not executable"
+		continue
+	fi
+
+	# shellcheck disable=SC2016
+	our_version=$(reprepro --list-format '${version}_${source}\n' -T deb listfilter "$OURSUITE" "\$Source (== $p)" | sed 's/.*_.*(\(.*\))$/\1/;s/_.*//' | uniq)
+	their_version=$(chdist_base apt-get source --only-source -t "$BASESUITE" --no-act "$p" | sed "s/^Selected version '\\([^']*\\)' ($BASESUITE) for .*/\\1/;t;d")
+	if test -z "$their_version"; then
+		echo "cannot determine source version for $p"
+		exit 1
+	fi
+	if test -n "$our_version" && dpkg --compare-versions "$our_version" gt "$their_version"; then
+		if [ -e repo/dists/$OURSUITE/Release ] && [ repo/dists/$OURSUITE/Release -ot "patches/$p" ]; then
+			echo "patches/$p has been changed -- rebuilding"
+		else
+			echo "package $p up to date"
+			continue
+		fi
+	fi
+
+	reprepro removesrc "$OURSUITE" "$p"
+
+	rm -Rf "$WORKDIR"
+	mkdir --mode=0777 "$WORKDIR"
+	(
+		cd "$WORKDIR"
+		chdist_base apt-get source --only-source -t "$BASESUITE" "$p"
+		cd "$p-"*
+		"$PATCHDIR/$p"
+		dch --local "+$OURSUITE" "apply mnt reform patch"
+		dch --release ""
+		# build foreign arch:any packages
+		if ! chdist_base apt-cache showsrc --only-source "$p" | grep -q '^Architecture: all$'; then
+			rm -f ../*.changes
+			DEB_BUILD_OPTIONS="noautodbgsym nocheck" sbuild -d "$BASESUITE" --host="$HOST_ARCH" --no-arch-all --arch-any --nolog --no-clean-source --no-source-only-changes --no-run-lintian --no-run-autopkgtest --profiles=cross,nobiarch,nocheck,noudeb --extra-repository="$SRC_LIST_PATCHED" --chroot-mode=unshare --chroot="$BUILD_CHROOT"
+			reprepro include "$OURSUITE" ../*.changes
+		fi
+		# build potential arch:all packages
+		if chdist_base apt-cache showsrc --only-source "$p" | grep -q '^Architecture:.* all$'; then
+			rm -f ../*.changes
+			DEB_BUILD_OPTIONS="noautodbgsym nocheck" sbuild -d "$BASESUITE" --arch-all --no-arch-any --nolog --no-clean-source --no-source-only-changes --no-run-lintian --no-run-autopkgtest --profiles=nobiarch,nocheck,noudeb --extra-repository="$SRC_LIST_PATCHED" --chroot-mode=unshare --chroot="$BUILD_CHROOT"
+			reprepro include "$OURSUITE" ../*.changes
+		fi
+		cd ..
+	)
+	rm -Rf "$WORKDIR"
+done

reform2-imx8mq/patches/xwayland

+#!/bin/sh
+set -e
+# the following is a workaround for https://bugs.debian.org/939515
+patch -p1 << 'EOF'
+diff --git a/debian/control b/debian/control
+index 847a23938..790fb5de0 100644
+--- a/debian/control
++++ b/debian/control
+@@ -19,6 +19,7 @@ Build-Depends:
+  libxshmfence-dev,
+  libxv-dev,
+  libwayland-dev,
++ libwayland-dev:native,
+  mesa-common-dev,
+  x11proto-dev,
+  xfonts-utils,
+-- 
+2.33.0
+EOF
+patch -p1 << 'EOF'
+--- /dev/null
++++ b/debian/patches/glamor
+@@ -0,0 +1,11 @@
++--- a/glamor/glamor_render.c
+++++ b/glamor/glamor_render.c
++@@ -1589,6 +1589,8 @@ glamor_composite_clipped_region(CARD8 op
++     if (prect != rect)
++         free(prect);
++  out:
+++    glFinish();
+++
++     if (temp_src != source)
++         FreePicture(temp_src, 0);
++     if (temp_mask != mask)
+diff --git a/debian/patches/series b/debian/patches/series
+index a82d1b41e..4b2d3a3f2 100644
+--- a/debian/patches/series
++++ b/debian/patches/series
+@@ -1 +1,2 @@
+ #placeholder
++glamor
+EOF