我正在尝试从源代码构建 ddar（ https://github.com/basak/ddar ）。这些是我发出的命令：
sudo apt-get install devscripts python-protobuf debhelper python-all-dev python-support xmltoman python-setuptools
git clone https://github.com/basak/ddar.git
debuild -i -us -uc -b
我的目标是安装 ddar 二进制文件，但我不知道出了什么问题。这是由 吐出的最后几行debuild -i -us -uc -b：
dh_installdeb
dh_gencontrol
dpkg-gencontrol: warning: Provides field of package ddar: unknown substitution variable ${python:Provides}
dh_md5sums
dh_builddeb
dpkg-deb: warning: 'debian/ddar/DEBIAN/control' contains user-defined field 'Python-Version'
dpkg-deb: warning: ignoring 1 warning about the control file(s)
dpkg-deb: building package `ddar' in `../ddar_0.1-1_amd64.deb'.
dpkg-genchanges -b >../ddar_0.1-1_amd64.changes
dpkg-genchanges: binary-only upload - not including any source code
dpkg-source -i --after-build ddar
dpkg-buildpackage: binary only upload (no source included)
Now running lintian...
W: ddar: new-package-should-close-itp-bug
E: ddar: extended-description-is-empty
Finished running lintian.
第一个问题似乎是E: ddar: extended-description-is-empty，我面临的第二个问题是我不知道如何安装软件包。后者可能是由于构建过程并不完全成功。
如何摆脱错误以及如何随后安装该软件包？
我在 Ubuntu 13.04 64 位的非特权用户下构建。