My favorite web brower depends on libcurl3 (Opera 36.0) But many apps depends on libcurl4 including PlayOnLinux or Steam client. It will be nice to have PlayOnLinux or Steam installed but I'm not giving up my favorite web browser. Do someone knows workaround how I can have installed both of them ? I readed somewhere that libcurl4 is based on libcurl3 so I have no idea why they keep uninstalling each other.
Eventually, I found better, universal solution for this. A guy on internet created CURL version which supports both CURL3 and CURL4. Available via. PPA. So far it works good. Unfortunately, I'm sure this version of CURL is not well known despite it solves problem which is very common to all Ubuntu users. So, I have to ask to share this knowledge in any form you like or prefer
Looks like I totally over-brained it. I performed several steps and it works ! Thank you @guiverc , your "This is an alternative" brinks me idea of forcing program to accept libcurl3 or libcurl4
- Open terminal in temporary folder. Use
dpkg-deb -x /path/to/deb/file .
- Open control.tar.gz. Navigate to
- Change line with dependency from
libcurl3 | libcurl4
dpkg-deb -b . name-of-new-deb-file.deb
- Now run
dpkg-deb -e path-to-deb-file-crated-in-step-4
- Package get installed using temporary folder as root folder.
- Create pentagram from small red colored stones. At full moon, sacrifice a goat with 666 stabs with knife while screaming "SUDO" at moon.
- Launch file browser as root and copy all folders and files from temporary folder to real folders (
- All done, programm is installed.
I'm sure one of steps is not necessary but I don't know which one.
This is an alternative that means your reason, whilst not really including libcurl3 & libcurl4 in your system at the same time.
I would suggest having libcurl4 in your system for your main apps, in the hopes that it provides better security, and adding the Opera browser as a snap
Snaps contain their required libs inside the snap itself (ie. self contained), thus avoiding the issue you were asking about. Thus libcurl3 will be contained within the snap containing your opera browser, and not impact any other software requiring libcurl4. It's a quick work-around :)
The solution suggested by Jacob worked for me -thank you very much- and would be the ultimate one if you don't want to spend more time on the described issue.
Part of the story : I had to re-install R packages on Ubuntu Bionic requiring a new curl configuration, after a faulty Ubuntu update. If you get a message like
/usr/lib/x86_64-linux-gnu/libcurl.so.4: version `CURL_OPENSSL_3' not found
from your R terminal, follow this solution.
sudo add-apt-repository ppa:xapienz/curl34 sudo apt-get update