Cant install Ruby on Ubuntu 16.04 LTS

Question

Can't install Ruby via

sudo apt-get install ruby-full

The following packages have unmet dependencies : Ruby, ruby-dev, libtcltk-ruby, ri

E: Unable to correct problems, you have held broken packages.

## your rights to use the software. Also, please note that software in
## universe WILL NOT receive any review or updates from the Ubuntu security
## team.
deb http://am.archive.ubuntu.com/ubuntu/ xenial universe
# deb-src http://am.archive.ubuntu.com/ubuntu/ xenial universe
deb http://am.archive.ubuntu.com/ubuntu/ xenial-updates universe
# deb-src http://am.archive.ubuntu.com/ubuntu/ xenial-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://am.archive.ubuntu.com/ubuntu/ xenial multiverse
# deb-src http://am.archive.ubuntu.com/ubuntu/ xenial multiverse
deb http://am.archive.ubuntu.com/ubuntu/ xenial-updates multiverse
# deb-src http://am.archive.ubuntu.com/ubuntu/ xenial-updates multiverse

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://am.archive.ubuntu.com/ubuntu/ xenial-backports restricted universe multiverse
# deb-src http://am.archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu xenial partner
# deb-src http://archive.canonical.com/ubuntu xenial partner

deb http://security.ubuntu.com/ubuntu xenial-security restricted
# deb-src http://security.ubuntu.com/ubuntu xenial-security main restricted
deb http://security.ubuntu.com/ubuntu xenial-security universe
# deb-src http://security.ubuntu.com/ubuntu xenial-security universe
deb http://security.ubuntu.com/ubuntu xenial-security multiverse
# deb-src http://security.ubuntu.com/ubuntu xenial-security multiverse
~

Try sudo apt-get install ruby-full ruby ruby-dev libtcltk-ruby ri. — anonymous2, May 25 '16 at 14:22
Hmm. Did you do a sudo apt-get update before trying your installation? — anonymous2, May 25 '16 at 14:27
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. — Zhirayr, May 25 '16 at 14:34
Ahhh! Try sudo apt-get purge ruby ruby-dev libtcltk-ruby ri. This will remove those packages and remove their configuration files. Then do your sudo apt-get install ruby-full. — anonymous2, May 25 '16 at 14:34
Made a typo above - it's libtcltk-ruby, not litcltk-ruby. Sorry! — anonymous2, May 25 '16 at 14:35
Package 'ruby' is not installed, so not removed Package 'ruby-dev' is not installed, so not removed Package 'libtcltk-ruby' is not installed, so not removed Package 'ri' is not installed, so not removed 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. — Zhirayr, May 25 '16 at 14:36
I believe it is just sudo apt install ruby for Ubuntu 16.04. — Terrance, May 25 '16 at 14:43
Terinal recomended the same, but Error E: Package 'ruby' has no installation candidate — Zhirayr, May 25 '16 at 14:47
Could you include the content of /etc/apt/sources.list in your question, please? — anonymous2, May 25 '16 at 14:49
Ok, that looks ok. Let's see what packages are held: dpkg --get-selections | grep hold — anonymous2, May 25 '16 at 14:57
Odd, does it still give the "you have held broken packages" if you run sudo apt-get install ruby-full? — anonymous2, May 25 '16 at 15:10
Yes it does, maybe I shuld install some older version of Ubuntu... — Zhirayr, May 25 '16 at 15:12
@Zhirayr Strange. I have a package called "ruby". In fact, this web page indicates that such a package exist in Xenial: http://packages.ubuntu.com/xenial/ruby . Do you have the package "ruby2.3"? http://packages.ubuntu.com/xenial/ruby2.3 — Ray, May 25 '16 at 15:14
Can you install the package aptitude? After that, if you do "sudo aptitude update; sudo aptitude search ruby", a list of packages with "ruby" in them should show up. Anything there look reasonable? — Ray, May 25 '16 at 15:16
Actually, in your sources.list, I don't see "main". Perhaps that's the problem? — Ray, May 25 '16 at 15:17
Does this answer your question? Unable to correct problems, you have held broken packages — karel, Jan 17 '20 at 23:15

anonymous2 · Accepted Answer · 2016-05-25T16:18:45.970

It looks like you're missing the first lines from your /etc/apt/sources.list file. Put them in manually at the start of your file:

# deb cdrom:[Ubuntu 12.04 LTS _Precise Pangolin_ - Release amd64 (20120425)]/ dists/precise/main/binary-i386/

# deb cdrom:[Ubuntu 12.04 LTS _Precise Pangolin_ - Release amd64 (20120425)]/ dists/precise/restricted/binary-i386/
# deb cdrom:[Ubuntu 12.04 LTS _Precise Pangolin_ - Release amd64 (20120425)]/ precise main restricted

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://am.archive.ubuntu.com/ubuntu/ xenial main restricted
deb-src http://am.archive.ubuntu.com/ubuntu/ xenial main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://am.archive.ubuntu.com/ubuntu/ xenial-updates main restricted
deb-src http://am.archive.ubuntu.com/ubuntu/ xenial-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://am.archive.ubuntu.com/ubuntu/ xenial universe
deb-src http://am.archive.ubuntu.com/ubuntu/ xenial universe
deb http://am.archive.ubuntu.com/ubuntu/ xenial-updates universe
deb-src http://am.archive.ubuntu.com/ubuntu/ xenial-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu 
## team, and may not be under a free licence. Please satisfy yourself as to

I know this looks a little funny, but I'd say that's what's lacking in your file. Copy and paste these to the top of /etc/apt/sources.list and run sudo apt-get update and then try your install.

Well, the "am" version instead of the "ca" version of the above to match the poster's other archives. — ubfan1, May 25 '16 at 16:16
anonymous2, ubfan1, Terrance, Ray Thank you very much. It worked, I've installed ubuntu from scratch, and didn't change anything, I don't even know why these sources have been missing. Thank you for help. — Zhirayr, May 25 '16 at 22:23

score -1 · Answer 2 · edited Jan 18 '20 at 11:58

-1

Using rbenv with ruby-build plugin typing:

$ rbenv install 2.x.x

For installing rbenv, see instructions at GitHub Project's page.

Cant install Ruby on Ubuntu 16.04 LTS

2 Answers2