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When I am installing color-picker in Ubuntu 16.04 from the terminal this error occurs. I use this command to install it:

sudo dpkg -i pick-colour-picker_1.5-0~201606011144~ubuntu14.04.1_all.deb

(Reading database ... 263715 files and directories currently installed.)
Preparing to unpack pick-colour-picker_1.5-0~201606011144~ubuntu14.04.1_all.deb ...
Unpacking pick-colour-picker (1.5-0~201606011144~ubuntu14.04.1) over (1.5-0~201606011144~ubuntu14.04.1) ...
dpkg: dependency problems prevent configuration of pick-colour-picker:
 pick-colour-picker depends on python-pkg-resources; however:
  Package python-pkg-resources is not installed.
 pick-colour-picker depends on python-gi-cairo; however:
  Package python-gi-cairo is not installed.

dpkg: error processing package pick-colour-picker (--install):
 dependency problems - leaving unconfigured
Processing triggers for desktop-file-utils (0.22-1ubuntu5.1) ...
Processing triggers for gnome-menus (3.13.3-6ubuntu3.1) ...
Processing triggers for bamfdaemon (0.5.3~bzr0+16.04.20160824-0ubuntu1) ...
Rebuilding /usr/share/applications/bamf-2.index...
Processing triggers for mime-support (3.59ubuntu1) ...
Processing triggers for hicolor-icon-theme (0.15-0ubuntu1) ...
Errors were encountered while processing:
 pick-colour-picker
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This seems that you haven't installed all the dependencies. Try running this command:

sudo apt -f install

It should solve your problem. If it doesn't work, try:

sudo apt install python-pkg-resources python-gi-cairo

Those two packages are the missing dependencies of color-picker in your case.

| improve this answer | |
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Your package is not being installed due to some unmet dependencies. I would like to suggest to install gdebi and install your .deb package from it. It will automatically install required dependency packages.

sudo apt-get install gdebi

Once installed, Right click on your .deb file and open it with gdebi. Cheers :)

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  • thanks but i don't want to install gdebi. i know it . have you another way? – Arman H Mar 30 '17 at 12:46
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@Arman

in that case do the following:

First move your deb file to /var/cache/apt/archives/ directory. Then run following command:

sudo apt-get install package_name

After executing this command, it will automatically download its dependencies.

If you still want to stick with dpkg dear, then:

You can install it using sudo dpkg -i debfile followed by

sudo apt-get install -f

I hope both options will meet your need :)

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