apt-get install dpkg-dev devscripts
apt-get build-dep grub2
apt-get source grub2
dpkg-source -x *.dsc
curl https://repo.rumyantsev.com/grub2/lvm-support.patch | patch -p1
DEBEMAIL=github.com@rumyantsev.com dch --local dolphin
dpkg-source --commit
DEB_BUILD_OPTIONS=nocheck debuild -us -uc