It is python, so the package itself can be the sources (I haven't looked at it)
wget https://garage.maemo.org/frs/download.php/4479/sliderotate-0.0.27.diablo.deb mkdir -p tmpdir/DEBIAN dpkg-deb -x sliderotate-0.0.27.diablo.deb tmpdir/ dpkg-deb -e sliderotate-0.0.27.diablo.deb tmpdir/DEBIAN/ perl -pi -e 's/xserver-xomap \(=/xserver-xomap \(>=/' tmpdir/DEBIAN/control chmod 755 tmpdir/DEBIAN/postinst tmpdir/DEBIAN/postrm tmpdir/DEBIAN/prerm dpkg-deb -b tmpdir/ sliderotate-0.0.27modified.diablo.deb