Can't be installed on POP!_OS 21.10

[pvojnisek]

I can't install the binary on POP!_OS 21.10.
Dependency error raises:

The following packages have unmet dependencies:
  xaos: Depends: libicu66 (>= 66.1) but it is not installable

To Reproduce
Steps to reproduce the behavior:

1. download binary: xaos_4.2.1-Ubuntu-20.04_amd64.deb
2. start installation
3. error message

┌─[✗]─[peter@pop-os]─[~/Downloads]
└──╼ $sudo dpkg -i xaos_4.2.1-Ubuntu-20.04_amd64.deb 
(Reading database ... 298160 files and directories currently installed.)
Preparing to unpack xaos_4.2.1-Ubuntu-20.04_amd64.deb ...
Unpacking xaos (4.2.1) over (4.2.1) ...
dpkg: dependency problems prevent configuration of xaos:
 xaos depends on libicu66 (>= 66.1); however:
  Package libicu66 is not installed.

dpkg: error processing package xaos (--install):
 dependency problems - leaving unconfigured
Processing triggers for mailcap (3.69ubuntu1) ...
Processing triggers for desktop-file-utils (0.26-1ubuntu2) ...
Processing triggers for gnome-menus (3.36.0-1ubuntu1) ...
Processing triggers for man-db (2.9.4-2) ...
Errors were encountered while processing:
 xaos

Desktop (please complete the following information):

• OS: Pop!_OS 21.10 x86_64
• Kernel: 5.16.15-76051615-generic

[LeeReitz]

libicu66 isn't in the 21.10 repositories. You will have to manually install it from the package.

#download the deb package from launchpad
wget https://launchpad.net/ubuntu/+source/icu/66.1-2ubuntu2/+build/18847288/+files/libicu66_66.1-2ubuntu2_amd64.deb

#manually install deb
sudo dpkg -i libicu66_66.1-2ubuntu2_amd64.deb