Package: libao4 Version: 1.0.0-4 Severity: serious Justification: Breaks other software
Hi, since version 2.30 brasero[1] (a graphical burning program) explicitly checks the versions of the third-party tools it is using[2]; among these is cdrdao[3] (Disk-At-Once recorder). Normally this looks like this: $ cdrdao version | sed 's/^/STDIN:/g' Cdrdao version 1.2.3 - (C) Andreas Mueller <andr...@daneb.de> (As you can see everything goes to stderr) Now if libaudio2[4] is not installed it looks like this: $ cdrdao version | sed 's/^/STDIN:/g' ERROR: Failed to load plugin /usr/lib/ao/plugins-4/libnas.so => dlopen() failed Cdrdao version 1.2.3 - (C) Andreas Mueller <andr...@daneb.de> This is because /usr/lib/ao/plugins-4/libnas.so links against libaudio.so.2 which is provided by libaudio2. As a consequence brasero can't parse the cdrdao version string anymore (see [5]) and thus fails to recognize it correctly which results in audio disc creation being disabled. Now most users won't see this error because some other package pulled in libaudio2, but if not, unrelated things like brasero will break. This problem is not limited to libaudio2 but also affects the other suggestions. If I install cdrdao in a fresh chroot set up by debootstrap I get this: $ cdrdao version | sed 's/^/STDIN:/g' ERROR: Failed to load plugin /usr/lib/ao/plugins-4/libalsa.so => dlopen() failed ERROR: Failed to load plugin /usr/lib/ao/plugins-4/libnas.so => dlopen() failed ERROR: Failed to load plugin /usr/lib/ao/plugins-4/libpulse.so => dlopen() failed ERROR: Failed to load plugin /usr/lib/ao/plugins-4/libesd.so => dlopen() failed Cdrdao version 1.2.3 - (C) Andreas Mueller <andr...@daneb.de> Note that not only software packaged in Debian might parse such version strings but also local programs, scripts, etc. We should therefore prevent this error messages from screwing up things by preventing them from being printed at all. And that can only happen by changing libao4's suggestions[6] to depencies. Best Regards Alexander Kurtz [1] http://packages.debian.org/sid/brasero [2] http://git.gnome.org/browse/brasero/commit/?id=62bda5dab82ddba07b0d1af3af333860a97d39c3 [3] http://packages.debian.org/sid/cdrdao [4] http://packages.debian.org/sid/libaudio2 [5] http://git.gnome.org/browse/brasero/diff/plugins/cdrdao/burn-cdrdao.c?id=62bda5dab82ddba07b0d1af3af333860a97d39c3 [6] http://packages.debian.org/sid/libao4
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