Same error here! It fails on some packages, like wine on my case: apt-build install wine1.2 wine1.2 will not be built because it doesn't have a source package. Missing source package name for source_by_source(). *however apt-get source gets the package happily ------------------------------------------------------------------------------ apt-get source wine Leyendo lista de paquetes... Hecho Creando árbol de dependencias Leyendo la información de estado... Hecho Tome «wine1.2» como paquete fuente en vez de «wine» Necesito descargar 22,7MB de archivos fuente. Des:1 http://archive.ubuntu.com/ubuntu/ maverick-updates/universe wine1.2 1.2.1-0ubuntu1 (dsc) [2379B] Des:2 http://archive.ubuntu.com/ubuntu/ maverick-updates/universe wine1.2 1.2.1-0ubuntu1 (tar) [22,5MB] 7% [2 wine1.2 1658kB/22,5MB 7%]^C --------------------------------------------------------------------------------------------------------------------------- apt-cache policy wine1.2 wine1.2: Instalados: 1.2.1-1ubuntu1 Candidato: 1.2.1-1ubuntu1 Tabla de versión: *** 1.2.1-1ubuntu1 0 100 /var/lib/dpkg/status 1.2.1-0ubuntu1 0 500 http://archive.ubuntu.com/ubuntu/ maverick-updates/universe amd64 Packages 1.2-0ubuntu9 0 500 http://archive.ubuntu.com/ubuntu/ maverick/universe amd64 Packages N: Ignoring file 'apt-build' in directory '/etc/apt/sources.list.d/' as it has no filename extension ---------------------------------------------------------------------------------------------------------------------------------------- # apt-cache show wine1.2 Package: wine1.2 Priority: optional Section: universe/otherosfs Installed-Size: 84820 Maintainer: Ubuntu MOTU Developers