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Install Citrix Workspace on Groovy Gorilla on Raspeberry Pi

 

Citrix on Ubuntu

How I got Citrix Workspace working on Groovy Gorilla (Ubuntu 20.10) on Raspberry Pi 400

At first installing Citrix on Ubuntu may seem like a no brainer, but because how Ubuntu and Citrix have packaged software for Raspberry Pi, it is pain in the neck to get it working correctly. 

What is the issue?

When I installed Ubuntu on Raspberry Pi hardware, the only package available for Pi 4/400 was 64 bit, but Citrix has only ARMHF packages for raspberry Pi which is 32 bit. Technically 32 bit package should work on 64 bit architecture without a fuss, but for whatever reason Citrix package checks if package to be installed matches OS bit level. Attempting to install the package as well as subsequent system updates report failure. More over Software Center can't install or remove software complaining broken packages on the system. First let me tell you how I installed Citrix then will go on fixing issue.

Prepare system for Citrix installation

  1. Check system architecture using dpkg --print-architecture command

    For me it reported arm64.
  2. As Citrix is available only for armhf, I added support for armhf using command sudo dpkg --add-architecture armhf.
  3. Now checking available architectures I see armhf is reported as foreign architecture, sweet!
  4. For new architecture to take effect, updated packages using sudo apt update and sudo apt upgrade.
Now system is ready to accept armhf packages.

Install Citrix Workspace

  1. Downloaded workspace app from https://www.citrix.com/downloads/workspace-app/
  2. Installed deb package using sudo dpkg -i icaclient_20.10.0.6_armhf.deb.
  3. Installation reported missing packages. I got these corrected using sudo apt --fix-missing update and sudo apt --fix-broken install.
  4. Linked certificates from Mozilla to Citrix client using sudo ln -s /usr/share/ca-certificates/mozilla/* /opt/Citrix/ICAClient/keystore/cacerts 
At this point I have a functional Citrix workspace but every sudo apt upgrade is reporting icaclient is partially configured package and attempts to configure it and fail. Super annoying! 

Let's get this annoying issue fixed.

Fix Citrix Workspace post installation script

As issue is reported in post-installation script I decided to look in what the script is attempting to do and is failing. 

  1. Opened the script /var/lib/dpkg/info/icaclient.postinst in editor.
  2. After a bit of reading through and running script with debug lines found script is failing to find suitable GStreamer package.
  3. Script is looking for hardware info using uname -m which Ubuntu reports as aarch64 but GStreamer libraries installed for armhf are 32 bit. Script decided not to use libraries.

  4. As I already installed armhf architecture, I see no risk forcing script to assume 32 bit architecture.

  5. Now the GStreamer library issue is resolved, but post install script is still failing.
  6. This time I see it is finding the machine architecture based on which it is decideing to clear cache folders. Once again uname -m is used, which is reporting aarch64 and script is looking for armhf. Updated script to use armhf configuration even when uname is reporting aarch 64. I know, it is not right way of fixing this issue, but knowing I have armhf architecture support installed I see no issue forcing to use it.

That's all it took, now Citrix Workspace is working as expected and system upgrade is also not complaining.

P.S. I saw some blogs fiddling with Kernel to fake architecture as armhf to get armhf packages installed without updating installer, but for one package I am not willing to compromising on everything else.

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