Anyone using seatd? having problem with service start

https://github.com/kennylevinsen/seatd
the package version 0.6.3 build fine but i cant start the service. i did a rc.seatd service but it doesnt work as it should. Sway and river that use wlroots needs seatd.

this slackbuild is not mine its biker-rat s slackbuild i only changed version and some meson options.

Code:#!/bin/sh
# Generated by Alien's SlackBuild Toolkit: http://slackware.com/~alien/AST
# Copyright 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 Eric Hameleers, Eindhoven, Netherlands
# Copyright 2021 Paul Litwack <paullitwack@gmail.com>
# All rights reserved.
#
# Permission to use, copy, modify, and distribute this software for
# any purpose with or without fee is hereby granted, provided that
# the above copyright notice and this permission notice appear in all
# copies.
#
# THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
# -----------------------------------------------------------------------------

PRGNAM=libseat
VERSION=${VERSION:-0.6.3}
BUILD=${BUILD:-1}
TAG=${TAG:-_pjl}

NUMJOBS=${NUMJOBS:-" -j$(nproc) "}

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
case "$(uname -m)" in
i?86) ARCH=i586 ;;
arm*) readelf /usr/bin/file -A | egrep -q "Tag_CPU.*[4,5]" && ARCH=arm || ARCH=armv7hl ;;
# Unless $ARCH is already set, use uname -m for all other archs:
*) ARCH=$(uname -m) ;;
esac
export ARCH
fi

if [ "$ARCH" = "i486" ]; then
SLKCFLAGS="-O2 -march=i486 -mtune=i686"
SLKLDFLAGS=""
LIBDIRSUFFIX=""
elif [ "$ARCH" = "i586" ]; then
SLKCFLAGS="-O2 -march=i586 -mtune=i686"
SLKLDFLAGS=""
LIBDIRSUFFIX=""
elif [ "$ARCH" = "s390" ]; then
SLKCFLAGS="-O2"
SLKLDFLAGS=""
LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
SLKCFLAGS="-O2 -fPIC"
SLKLDFLAGS="-L/usr/lib64"
LIBDIRSUFFIX="64"
elif [ "$ARCH" = "armv7hl" ]; then
SLKCFLAGS="-O2 -march=armv7-a -mfpu=vfpv3-d16"
SLKLDFLAGS=""
LIBDIRSUFFIX=""
else
SLKCFLAGS="-O2"
SLKLDFLAGS=""
LIBDIRSUFFIX=""
fi

case "$ARCH" in
arm*) TARGET=$ARCH-slackware-linux-gnueabi ;;
*) TARGET=$ARCH-slackware-linux ;;
esac

CWD=$(pwd)
TMP=${TMP:-/tmp}
PKG=$TMP/pkg-$PRGNAM

rm -rf $PKG
mkdir -p $TMP $PKG
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.?z* || exit 1
cd $PRGNAM-$VERSION || exit 1

# Make sure ownerships and permissions are sane:
chown -R root:root .
find . \
\( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
-exec chmod 755 {} \; -o \
\( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
-exec chmod 644 {} \;

# Configure:
CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
LDFLAGS="$SLKLDFLAGS" \
meson build --prefix=/usr \
-Dlibseat-logind=disabled \
-Dlibseat-seatd=enabled \
-Dlibseat-builtin=enabled \
-Dman-pages=auto \

# Build and install:
ninja -C build
DESTDIR=$PKG ninja install -C build

# Strip binaries:
find $PKG | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
find $PKG | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null

# Compress and link manpages, if any:
if [ -d $PKG/usr/man ]; then
( cd $PKG/usr/man
for manpagedir in $(find . -type d -name "man*") ; do
( cd $manpagedir
for eachpage in $( find . -type l -maxdepth 1) ; do
ln -s $( readlink $eachpage ).gz $eachpage.gz
rm $eachpage
done
gzip -9 *.?
)
done
)
fi

# Compress info files, if any:
if [ -d $PKG/usr/info ]; then
( cd $PKG/usr/info
rm -f dir
gzip -9 *
)
fi

# Add a documentation directory:
mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a \
<documentation_please_change> \
$PKG/usr/doc/$PRGNAM-$VERSION

# Add a package description and the post-install script if it exists:
mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
[ -f $CWD/doinst.sh ] && cat $CWD/doinst.sh > $PKG/install/doinst.sh

# Build package:
cd $PKG
/sbin/makepkg -l y -c n $TMP/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.txz