I'm trying to install Qt on a new Ubuntu 18.04.1 LTS build from a DVD burned
in Nov. 2018.
The common wisdom on the internet, that I successfully used in Nov. 2018, is:-
sudo apt-get install build-essential
sudo apt-get install qtcreator
sudo apt-get install qt5-default
Today (2019-03-20) the qt-default install produces:-
"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.
qt5-default : Depends: qtbase5-dev but it is not going to be installed
E: Unable to correct problems, you have held broken packages"
I can only assume the package has been updated with a broken version. How do
I install the old Nov. 2018 version? https://packages.ubuntu.com/bionic-updates/qt-default etc doesn't appear to list old versions.
I did let the install download updates so it might be something else that has
changed.
Or are there other work-arounds?
Related
Does anyone have a good approach to installing R on Ubuntu 20.04? I can't seem to find a solution for this specific to 20.04 focal through apt.
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04 LTS
Release: 20.04
Codename: focal
Edit: after going through the link here and adding the entry to sources.list, I ran into issues with dependencies:
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:
r-base : Depends: r-base-core (>= 4.0.2-1.2004.0) but it is not going to be installed
Depends: r-recommended (= 4.0.2-1.2004.0) but it is not going to be installed
Recommends: r-base-html but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
Per #DirkEddelbuettel's comment, I ran sudo apt install r-base-core r-recommended r-base-html to see next level dependencies:
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:
r-base-core : Depends: libblas3 but it is not installable or
libblas.so.3 but it is not installable
Depends: liblapack3 but it is not installable or
liblapack.so.3 but it is not installable
Depends: libtcl8.6 (>= 8.6.0) but it is not installable
Depends: libtk8.6 (>= 8.6.0) but it is not installable
Recommends: r-base-dev but it is not going to be installed
Recommends: r-doc-html but it is not going to be installed
r-recommended : Depends: r-cran-kernsmooth (>= 2.2.14) but it is not going to be installed
Depends: r-cran-mgcv (>= 1.1.5) but it is not going to be installed
Depends: r-cran-rpart (>= 3.1.20) but it is not going to be installed
Depends: r-cran-survival (>= 2.13.2-1) but it is not going to be installed
Depends: r-cran-matrix but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
There was a more underlying issue when I worked on trying to install r-base. I ended up finding out that I had problems with unmet dependencies after adding a PPA. I used this link here to fix the underlying problem of unmet dependencies, which in turn allowed me to apt install and not have any issues installing.
Here is what I do in the Rocker container r-ubuntu for the 20.04 image:
Install software-properties-common to be able to say add-apt-repository
Add the rrutter4.0 PPA for R itself (same as CRAN)
add-apt-repository --enable-source --yes "ppa:marutter/rrutter4.0"
Add the c4d4u.teams repo for over 4k CRAN packages:
add-apt-repository --enable-source --yes "ppa:c2d4u.team/c2d4u4.0+"
Run apt install r-base (and a few more).
In a narrow sense you only need 2 (as you likely do not 1 on a full Ubuntu system) and 4 but you may as well do 3.
You can of course also just to docker pull rocker/r-ubuntu:20.04 and get that container pre-made, but I use both: a container for tests, and these settings on my 20.04 machine(s).
Prerequisites
You will need an Ubuntu 20.04 with:
at least 1GB of RAM
a root user / non-root user with sudo privileges
Installing R
Because R is a fast-moving project, the latest stable version isn’t always available from Ubuntu’s repositories, so we’ll start by adding the external repository maintained by CRAN.
Note: CRAN maintains the repositories within their network, but not all external repositories are reliable. Be sure to install only from trusted sources.
Let’s first add the relevant GPG key.
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E298A3A825C0D65DFD57CBB651716619E084DAB9
Note that if you’re not using 20.04, you can find the relevant repository from the R Project Ubuntu list, named for each release. Ubuntu 20.04 is referred to as Focal Fossa, and the most recent version of R is 4.0.0, hence the naming convention of the repository below — focal-cran40.
sudo add-apt-repository 'deb https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/'
Now, we’ll need to run update after this in order to include package manifests from the new repository.
sudo apt update
At this point, we’re ready to install R with the following command.
sudo apt install r-base
If prompted to confirm installation, press y to continue.
Finally get into R shell-
sudo -i R
This confirms that we’ve successfully installed R and entered its interactive shell.
Hello I am trying to install reader onto my Ubuntu VPS. I only have 1 GB of RAM which is why I can not install it. I came across Dirk's post R (Ubuntu) - Can't install packages "readr" and "eurostat" where he explained the work around.
apt-get update # refresh
apt-get install software-properties-common
add-apt-repository -y "ppa:marutter/rrutter"
add-apt-repository -y "ppa:marutter/c2d4u"
apt-get update # now with new repos
apt-get install r-cran-readr
However, when I run the code. The final line gives me this error:
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:
r-cran-readr : Depends: r-api-3.4
Depends: r-cran-rcpp but it is not going to be installed
Depends: r-cran-tibble but it is not going to be installed
Depends: r-cran-hms but it is not going to be installed
Depends: r-cran-r6 but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
I was able to install all the packages separately and tried running the code again. I got the same error. I am not to sure what my next steps should be.
Edit**
I am trying to follow Dirk's advice in the comment section. I am having a difficult time understanding what to do with the "deb" file. Once I have the deb link
deb https://cloud.r-project.org/bin/linux/ubuntu bionic-cran35/
Some sources to me to run the command
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E084DAB9
However, I recieve this error.
keyserver receive failed: No dirmngr
It seems like I have to add the deb link to a directory. I am brand new to Ubuntu and the shell. If someone could explain this to me in simple terms that would be greatly appreciated.
I want to be able to install the latest stable R release for Ubuntu 18.04, I had the ubuntu version installed and so I removed it and then followed several guides like in this link.
No matter what I do I get the following output when I issue a sudo apt-get install r-base:
sudo apt install r-base
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:
r-base : Depends: r-base-core (>= 3.6.1-3disco) but it is not going to be installed
Depends: r-recommended (= 3.6.1-3disco) but it is not going to be installed
Recommends: r-base-html but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
What's wrong?
I'm trying to install the qt5 development libraries using sudo apt-get install qtbase5-dev, but I'm getting an error:
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:
qtbase5-dev : Depends: libgles2-mesa-dev or
libgles2-dev but it is not installable
Depends: libqt5gui5 (= 5.2.1+dfsg-1ubuntu14.3) but it is not going to be installed
Depends: libqt5printsupport5 (= 5.2.1+dfsg-1ubuntu14.3) but it is not going to be installed
Depends: libqt5widgets5 (= 5.2.1+dfsg-1ubuntu14.3) but it is not going to be installed
Recommends: libqt5opengl5-dev (= 5.2.1+dfsg-1ubuntu14.3) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
The problem is I don't have held packages - I checked using dpkg --get-selections | grep hold, but it showed nothing.
For me, this was caused by the oibaf graphics PPA being installed.
sudo apt-get install ppa-purge
sudo ppa-purge ppa:oibaf/graphics-drivers
will revert to stock graphics libs.
Manually installing libgles2-mesa-dev and then qtbase5-dev worked. I had to ran it in separate commands though:
sudo apt-get install libgles2-mesa-dev
sudo apt-get install qtbase5-dev
I have updated the sources.list file in /etc/apt with the link
deb https://cran.stat.nus.edu.sg/bin/linux/ubuntu precise/
I have changed precise with quantal, trusty also. I am staying in singapore so used the link from singapore. After
apt-get update
when I run
sudo apt-get install r-base
command i get the following error
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: r-base : Depends: r-base-core (>= 3.2.2-1precise0) but it is not going to be installed Depends: r-recommended (= 3.2.2-1precise0) but it is not going to be installed Recommends: r-base-html but it is not going to be installed E: Unable to correct problems, you have held broken packages.
Why Precise aka 12.10? That is neither the current LTS (14.04) nor the previous one (12.04).
As such, it is supported neither by Ubuntu (AFAIK) nor the Michael who (as a volunteer) looks after the "ports" of my Debian packages to Ubuntu.
I generally stay current, so my machines are currently all 15.04 with some 15.10. I recommend you do the same.
As for RStudio, it is still not apt-get'able so that will always be a simple download (though you can script that).