dpkg-buildpackage -us -uc -ui -B
dpkg-buildpackage: info: source package rpy2
dpkg-buildpackage: info: source version 3.0.4-1~bustercran.0
dpkg-buildpackage: info: source distribution buster-cran
dpkg-buildpackage: info: source changed by Johannes Ranke <jranke@uni-bremen.de>
 dpkg-source --before-build .
dpkg-buildpackage: info: host architecture amd64
dpkg-checkbuilddeps: error: Unmet build dependencies: dh-python python3-all-dev (>= 3.1.2-10~) python-setuptools python3-setuptools python3-numpy-dev python3-cffi python3-tzlocal
dpkg-buildpackage: warning: build dependencies/conflicts unsatisfied; aborting
dpkg-buildpackage: warning: (Use -d flag to override.)