PREIN

/bin/sh

getent group flatpak >/dev/null || groupadd -r flatpak
getent passwd flatpak >/dev/null || \
    useradd -r -g flatpak -d / -s /sbin/nologin \
     -c "User for flatpak system helper" flatpak
exit 0

POSTIN

/bin/sh

# Create an (empty) system-wide repo.
flatpak remote-list --system &> /dev/null || :