README.md: Problem with install instructions on Bullseye

$ sudo apt install virtualenv python-dev libssl-dev gettext python3-babel
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Note, selecting 'python-dev-is-python2' instead of 'python-dev'
gettext is already the newest version (0.21-4).
python3-babel is already the newest version (2.8.0+dfsg.1-7).
virtualenv is already the newest version (20.4.0+ds-2).
libssl-dev is already the newest version (1.1.1k-1+deb11u1).
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:
 dh-python : Breaks: python
             Breaks: python:i386
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.