Sunday, April 10, 2022

Installing Dependencies for dpkg Software Installation

Let's say you download any of the plethora of '.deb' packages that exist out there, and want to install it on your Ubuntu system (or the like).  You would use something similar to the following to do that installation:

    sudo dpkg -i imager_1.7.2_amd64.deb

Now, let's say you run that, but are then presented with output stating that there are a bunch of unmet dependencies.  Disconcerting, sure, but its not the end of the world, for sure.  For example:

$ sudo dpkg -i imager_1.7.2_amd64.deb 

Selecting previously unselected package rpi-imager.

(Reading database ... 195449 files and directories currently installed.)

Preparing to unpack imager_1.7.2_amd64.deb ...

Unpacking rpi-imager (1.7.2) ...

dpkg: dependency problems prevent configuration of rpi-imager:

 rpi-imager depends on libqt5qml5 (>= 5.10.0); however:

  Package libqt5qml5 is not installed.

 rpi-imager depends on qml-module-qtquick2; however:

  Package qml-module-qtquick2 is not installed.

 rpi-imager depends on qml-module-qtquick-controls2; however:

  Package qml-module-qtquick-controls2 is not installed.

 rpi-imager depends on qml-module-qtquick-layouts; however:

  Package qml-module-qtquick-layouts is not installed.

 rpi-imager depends on qml-module-qtquick-templates2; however:

  Package qml-module-qtquick-templates2 is not installed.

 rpi-imager depends on qml-module-qtquick-window2; however:

  Package qml-module-qtquick-window2 is not installed.

 rpi-imager depends on qml-module-qtgraphicaleffects; however:

  Package qml-module-qtgraphicaleffects is not installed.

dpkg: error processing package rpi-imager (--install):

 dependency problems - leaving unconfigured

Processing triggers for mailcap (3.69ubuntu1) ...

Processing triggers for gnome-menus (3.36.0-1ubuntu1) ...

Processing triggers for desktop-file-utils (0.26-1ubuntu2) ...

Processing triggers for hicolor-icon-theme (0.17-2) ...

Errors were encountered while processing:


I know that is a lot of output, sorry about that.  But I left it that way for effect and to give a full example.  Now, what you will need to do in this case, is run the following:

        sudo apt -f install -y

That will take and install any dependencies that were found during the previous software installation attempt, and install them.  After that is done, you can re-run the dpkg command to install your software, and it "should" just work and install your software.  ( I say should in quotes, as nothing is guaranteed. )

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