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I'm trying to upgrade deluge-common but keep getting this error, i try to google but cannot find the answer.

The following packages have unmet dependencies:
 deluge-common : Depends: python3-rencode but it is not installable
                 Depends: python3-setproctitle but it is not installable
E: Unable to correct problems, you have held broken packages.

I'm running ubuntu 16.04 and want upgrade to 18.04 but stuck at this error.

Thanks

fbvideou
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    "Not installable" means not available in any repository. Probably you need to enable universe (look it up). – fkraiem Oct 31 '19 at 17:44

1 Answers1

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As mentionned by fkraiem, you can either enable "universe" in your source repository by doing:

sudo add-apt-repository universe

Then,

sudo apt-get update

Now, you can retry the upgrade

Or you can also directly download them here: https://pkgs.org/download/python3-rencode and https://pkgs.org/download/python3-setproctitle (select those corresponding to your version of Ubuntu, installed them and try to upgrade.

NB: My personal opinion is when you are upgrading your version of Ubuntu, it usually better to make a fresh installation as a lot of packages are changed (some are no longer maintained and others are newly created like your python packages).

dc37
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    It is a very bad idea to install packages as stand-alone DEBs, since then you don't get automatic updates. – fkraiem Oct 31 '19 at 19:45
  • I agree that's not the perfect solution (as I said, I preferred fresh installation) but once the upgrade will be done to 18.04, both packages are in the repository so they should be updated automatically. – dc37 Oct 31 '19 at 19:59