Não consigo instalar o libav-dbg devido a problemas de dependência com números de versão dos pacotes instalados, que não correspondem aos do repositório. Como isso é possível e como posso resolver o problema?
Descrição do problema:
Tentar instalar o libav-dbg gera os seguintes problemas de dependência:
Reading package lists...
Building dependency tree...
Reading state information...
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
libav-dbg : Depends: libavcodec55 (= 6:10.2-1) but 10:2.1.3-dmo2 is to be installed or
libavcodec-extra-55 (= 6:10.2-1) but it is not going to be installed
Depends: libavformat55 (= 6:10.2-1) but 10:2.1.3-dmo2 is to be installed
Depends: libswscale2 (= 6:10.2-1) but 10:2.1.3-dmo2 is to be installed
A execução apt-cache policy libavcodec55mostra que uma versão diferente está instalada no repositório.
libavcodec55:
Installed: 10:2.1.3-dmo2
Candidate: 10:2.1.3-dmo2
Version table:
*** 10:2.1.3-dmo2 0
100 /var/lib/dpkg/status
6:10.2-2 0
600 http://debian.ethz.ch/debian/ unstable/main amd64 Packages
6:10.2-1 0
650 http://debian.ethz.ch/debian/ testing/main amd64 Packages
Na documentação online do pacote debian não encontro nenhuma referência à versão "10:2.1.3-dmo2".
Informações sobre meu sistema:
Estou executando testes debian com apt-pinning para instável, mas usei apenas instável para um pacote não relacionado (python3-matplotlib). Continuei no repositório para instalar programas.
Medidas tentaram resolver o problema:
apt-get -t testing install libavcodec55
Reading package lists...
Building dependency tree...
Reading state information...
libavcodec55 is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded
apt-get --reinstall install libavcodec55
Reading package lists...
Building dependency tree...
Reading state information...
Reinstallation of libavcodec55 is not possible, it cannot be downloaded.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Tentar remover o pacote libavcodec55 para reinstalação posterior também removeria muitos outros pacotes (deve ser devido a dependências?). Portanto, isso não é praticável, a menos que haja uma maneira de suprimir a remoção de todos os outros pacotes.
apt-get remove libavcodec55
Reading package lists...
Building dependency tree...
Reading state information...
The following packages were automatically installed and are no longer required:
audacity-data automoc digikam-data dvdauthor dvgrab enblend enfuse freeglut3
genisoimage htdig hugin hugin-data hugin-tools kde-base-artwork
kde-wallpapers-default kde-workspace-data kde-workspace-kgreet-plugins
kdenlive-data kipi-plugins-common liba52-0.7.4-dev libastro-dev libastro1
libboost-filesystem1.54.0 libboost-filesystem1.55.0 libboost-system1.54.0
libcln6 libdc1394-22-dev libdirac-dev libfaac-dev libfaad-dev libfftw3-3
libfftw3-double3 libfftw3-long3 libflac++6 libglew1.10 libgsm1-dev libhdf5-7
libkdcraw-data libkephal4abi1 libkipi-data libksane-data libksane0
libkscreensaver5 libksignalplotter4 libmlt-data libmp3lame-dev
libopencore-amrnb-dev libopencore-amrwb-dev libopencv-core-dev
libopencv-flann-dev libopencv-gpu-dev libopencv-imgproc-dev libopencv-ml-dev
libopencv-photo-dev libopencv-video-dev liborc-0.4-dev libpano13-3
libpano13-bin libphonon-dev libportsmf0 libprocessui4a libpyside1.2
libqalculate5 libqalculate5-data libqextserialport1 libqgpgme1
libqtlocation1 libquazip0 libquicktime2 libraw1394-dev libsbsms10
libschroedinger-dev libshiboken1.2 libshp2 libsoprano-dev libsoundtouch0
libsox-fmt-alsa libsox-fmt-base libsox2 libsoxr0 libswscale-dev
libtheora-dev libvamp-hostsdk3 libvigraimpex4 libwxbase3.0-0 libwxgtk3.0-0
libx264-dev libxvidcore-dev libzthread-2.3-2 marble-data oxygencursors
python-pyside.qtcore python-pyside.qtdeclarative python-pyside.qtgui
python-pyside.qthelp python-pyside.qtnetwork python-pyside.qtopengl
python-pyside.qtscript python-pyside.qtsql python-pyside.qtsvg
python-pyside.qttest python-pyside.qtuitools python-pyside.qtwebkit
python-pyside.qtxml recordmydesktop swh-plugins
Use 'apt-get autoremove' to remove them.
The following extra packages will be installed:
libavcodec-extra-55 phonon-backend-null
The following packages will be REMOVED:
audacity digikam digikam-private-libs ffmpegthumbs freespacenotifier
frei0r-plugins gimp gstreamer1.0-libav katepart kde-runtime kde-style-oxygen
kde-window-manager kde-workspace kde-workspace-bin kdebase-workspace
kdelibs-bin kdelibs5-dev kdelibs5-plugins kdenlive kdepim-runtime
kdepimlibs-kio-plugins kdepimlibs5-dev kdoctools khelpcenter4 kipi-plugins
klipper kscreen ksysguard libakonadi-calendar4 libakonadi-contact4
libakonadi-kcal4 libakonadi-kde4 libakonadi-kmime4 libakonadi-socialutils4
libakonadi-xml4 libav-tools libavcodec-dev libavcodec55 libavdevice54
libavfilter4 libavformat-dev libavformat55 libchromaprint-tools libcv-dev
libcvaux-dev libgegl-0.2-0 libhighgui-dev libkabc4 libkactivities-bin
libkactivities-models1 libkalarmcal2 libkatepartinterfaces4 libkblog4
libkcal4 libkcalutils4 libkdcraw-dev libkdcraw23 libkde3support4
libkdewebkit5 libkemoticons4 libkexiv2-dev libkfile4 libkgapi2-2 libkhtml5
libkimproxy4 libkio5 libkipi-dev libkipi11 libkmediaplayer4 libknewstuff2-4
libknewstuff3-4 libknotifyconfig4 libkolab0 libkontactinterface4 libkparts4
libkpimidentities4 libkpimtextedit4 libkpimutils4 libkprintutils4
libkrossui4 libksane-dev libktexteditor4 libktnef4 libkutils4
libkworkspace4abi2 libkxmlrpcclient4 libmailtransport4 libmarble-dev
libmarblewidget18 libmicroblog4 libmlt++3 libmlt6 libokularcore4
libopencv-calib3d-dev libopencv-calib3d2.4 libopencv-contrib-dev
libopencv-contrib2.4 libopencv-dev libopencv-features2d-dev
libopencv-features2d2.4 libopencv-gpu2.4 libopencv-highgui-dev
libopencv-highgui2.4 libopencv-legacy-dev libopencv-legacy2.4
libopencv-objdetect-dev libopencv-objdetect2.4 libopencv-ocl-dev
libopencv-ocl2.4 libopencv-stitching-dev libopencv-stitching2.4
libopencv-superres-dev libopencv-superres2.4 libopencv-ts-dev
libopencv-ts2.4 libopencv-videostab-dev libopencv-videostab2.4
libopencv2.4-java libopencv2.4-jni libplasma3 libplasmaclock4abi4
libplasmagenericshell4 libstreamanalyzer0 libsyndication4
libtaskmanager4abi4 libweather-ion6 marble-plugins melt minidlna mplayer2
okular phonon phonon-backend-vlc plasma-dataengines-workspace plasma-desktop
plasma-scriptengine-javascript plasma-widgets-workspace python-pyside
python-pyside.phonon systemsettings vlc vlc-dbg vlc-nox vlc-plugin-notify
vlc-plugin-pulse
The following NEW packages will be installed:
libavcodec-extra-55 phonon-backend-null
0 upgraded, 2 newly installed, 145 to remove and 0 not upgraded.
Need to get 2'855 kB of archives.
After this operation, 310 MB disk space will be freed.
Do you want to continue? [Y/n] Abort.
Responder1
*** 10:2.1.3-dmo2 0
100 /var/lib/dpkg/status
Parece que você instalou o libavcodec55 com dpkg -i libavcodec55*.debe não a partir de um repositório apt.
Pelo "-dmo2" no número da versão, eu diria que era um pacote dehttp://www.deb-multimedia.org.
Você pode tentar desinstalar libavcodec55, libavcodec-extra-55, libavformat55 e libswscale2:
apt-get remove libavcodec55 libavcodec-extra-55 libavformat55 libswscale2
E então instale-os do repositório:
apt-get install libavcodec55 libavcodec-extra-55 libavformat55 libswscale2
Se não quiser remover pacotes que dependem deles, você pode usar:
dpkg -r --force-depends libavcodec55 libavcodec-extra-55 libavformat55 libswscale2
Seu sistema ficará em um estado inconsistente, mas você pode corrigir isso com o apt-get -f install, que instala as dependências faltantes, ou seja, os pacotes que você acabou de remover, mas do repositório.
(A propósito, os pacotes libav* no deb-multimedia são do ffmpeg propriamente dito, enquanto esses pacotes no Debian são dolibavgarfo.
Você pode ter uma boa razão para querer os pacotes no deb-multimedia em vez dos do Debian, mas nesse caso você deve usar o repositório do deb-multimedia em vez de instalar manualmente os DEBs.)