How to resolve the errors that show up when trying to install Unity tweak tool?

Question

When I try to install unity tweak tool with

sudo apt-get install unity-tweak-tool

the output is

Reading package lists... Done
Building dependency tree       
Reading state information... Done
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:
 unity-tweak-tool : Depends: unity-webapps-common but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

I tried Synaptic and Ubuntu software center also. I have Ubuntu 16.04 LTS.

Solution 1

I'm also using Ubuntu 16.04.

Note : If you have tried installing tweak-tool before please visit Removing Unity-Tweak-Tool first and follow all instruction.

Now to install follow below steps:

• First open Terminal (Alt+Ctrl+T) and paste sudo apt-get install unity-tweak-tool gnome-tweak-tool.

• Enter your password.

• Now it will take 1-2 minutes to install.

• After installation is finished, you can launch the Tweak-Tool from terminal by typing unity-tweak-tool, OR launch it via Dash.

Try purging the unity tweak tool and reinstalling it(if above one failed to give you desired result).

• sudo apt-get purge unity-tweak-tool

• sudo apt-get autoremove && sudo apt-get autoclean

• sudo apt-get install unity-webapps-common unity-tweak-tool

• sudo apt-get install unity-tweak-tool

I Hope this time it works for you as it working for me.

Solution 2

I'm using Ubuntu 18.04, it's March 2019 and I've just installed unity-tweak-tool through the terminal this way:

On Ubuntu, open "Software & Updates" screen. Search for it in your dash.

Check The first 4 options, as on the screenshot:

It will ask to do a update when you save. Allow it.

Open your terminal and install normally: sudo apt-get install unity-tweak-tool

PS: Kudos to this answer.

Solution 3

• Try installing through PPA (personal package archive)

sudo add-apt-repository ppa:freyja-dev/unity-tweak-tool-daily
sudo apt-get update

• Then install the package from terminal
  

sudo apt-get install unity-tweak-tool-daily

Solution 4

Found this article so might help you solve the install. See extract of the 2nd option I believe would help install missing dependencies also:

sudo apt-get install gdebi

wget http://archive.ubuntu.com/ubuntu/pool/universe/u/unity-tweak-tool/unity-tweak-tool_0.0.7ubuntu2_all.deb

sudo gdebi unity-tweak-tool_0.0.7ubuntu2_all.deb

unity-tweak-tool

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Comments

[Random]

i got a problem when i tried the first command '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: unity-webapps-common : Depends: unity-webapps-service (>= 2.3.8-0ubuntu3) but it is not going to be installed E: Unable to correct problems, you have held broken packages. '

[karel]

Edited answer to fix broken packages for unity-webapps-service too. The results of this should be informative because unity-webapps-service has some important dependency packages required by it.

[Random]

'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: gnome-tweak-tool : Depends: gnome-settings-daemon but it is not going to be installed unity-tweak-tool : Depends: unity-webapps-common but it is not going to be installed E: Unable to correct problems, you have held broken packages.

[Random]

The following packages have unmet dependencies: unity-webapps-service : Depends: webapp-container E: Unable to correct problems, you have held broken packages.

[Pankaj Kumar Gautam]

try purging unity-tweak-tool

[Pankaj Kumar Gautam]

use sudo apt-get purge unity-tweak-tool and below commands to install it @Random